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#801 2008-12-19 17:55:39

careless25
Real Member
Registered: 2008-07-24
Posts: 560

Re: 10 second questions


i m sleepy so i might have made mistakes. sleep

Last edited by careless25 (2008-12-20 03:42:32)

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#802 2008-12-19 18:23:57

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answers to #962, #963, #964, #965, #966 and #970:-careless25, all the answers other than #970 are correct. Please hide your answers using the hide tag.
Very well done, careless25!
congrats203.jpg

#971. A boy was asked to multiply a certain number by 50. He multiplied it by 30 instead and got an answer less than the correct one by 400. What was the number to be multiplied?

#972.Two numbers are said to be in the ratio 3:5. If 9 is subtracted from each, they are in the ratio 12:23. Find the numbers.

#973. 0.6 of a number is equal to 0.08 of another number. What is the ratio of the numbers?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#803 2008-12-19 19:52:32

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: 10 second questions


"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#804 2008-12-19 21:45:24

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answer to #971:-
That one should have been fairly simple to you, JohnnyReinB!
Well done!!!

#974. The sum of three numbers such that each is divisible by 3 and are in Arithmetic Progression is 72. Which is the largest among them?

#975. Which is the smallest number which when subtracted from the sum of squares of 11 and 13 gives a perfect square?

#976. A man spends two-fifth of his earnings. One-fourth of the expenditure goes for food, one-fifth on rent, two-fifth on travel and the rest on donations. If his total earnings is $5,000, what is the expenditure on donations?

#977. On dividing a number by 4, the sum of quotient and the remainder is 8 and sum of their squares is 34. Find the number.

#978. From a group of boys and girls, 15 girls leave. There are then left 2 boys for each girl. After this, 45 boys leave. Then there are left 5 girls for each boy. Find the number of girls in the beginning.

#979. Find the value of integer x if

.

#980. The average of seven consecutive numbers is 20. Which is the largest of these numbers?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#805 2008-12-20 02:04:17

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#981. Find the value of

.

#982. Find the value of

.

#983. Find the value of

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#806 2008-12-20 02:31:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#984. Sachin is 4 years younger than Rahul. If their ages are in the ratio 7:9 respectively, how old is Sachin?

#985. Present ages of X and Y are in the ratio 5:6 respectively. Seven years hence, the ratio would be 6:7. What is X's present age in years?

#986. The product of the ages of Andrew and Neil is 240. If twice the age of Neil is more than Andrew's age by 4 years, what is Neil's age?

#987. Find the value of x if

.

#988. Evaluate

#989. Evaluate

.

#990. If x=1+√2 and y=1-√2, find the value of (x² + y²).


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#807 2008-12-20 18:37:24

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#991. The difference between the circumference and the radius of a circle is 37 centimeters. What is the area of the circle?

#992. Which of the two, a square of perimeter 44 centimeters and a circle of circumference 44 centimeters has larger area and by how much?

#993. If the ratio of areas of two circles be 4:9, what would the ratio of their circumferences be?

#994. What is the number of revolutions a wheel of diameter 40 centimeters makes in travelling a distance of 176 meters?

#995. If one-third of one-fourth of a number is 15, then what is three-tenth of that number?

#996. A number is doubled and 9 is added. If the resultant is multiplied by 3, it becomes 75. What is the number?

#997. When 24 is subtracted from a number, it reduces to its four-seventh. What is the sum of the digits of that number?

#998. The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root?

#999. Find a positive number which when increased by 17 is equal to 60 times the reciprocal of the number.

#1000. Find the value of

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#808 2008-12-21 01:42:00

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1001. Find the value of

.

#1002. Find the value of

.

#1003. Find the value of

.

#1004. If

,
find the value of
.

#1005. What is the value of


if
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#809 2008-12-22 02:21:52

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1006. A solid of iron of dimensions 49 cm x 33 cm x 24 cm is moulded into a sphere. What would the radius of the sphere be?

#1007. What is the ratio of the volume of a cube to that of a sphere which would fit inside the cube?

#1008. What is the value of

?

#1009. What is the value of

?

#1010. What is the value of

?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#810 2008-12-22 16:29:37

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1011. What is the value of

?

#1012. What is the value of 876²  - 875² ?

#1013. What is the value of

?

#1014. What is the value of

?

#1015. What is the value of x³ - 18x²  + 108x - 216 if x=17?

#1016. What is the value of


if
?

#1017. Find the value of x if

.

#1018. Find the value of

?

#1019. If x+y+z=9 and xy+yz+xz=40, find the value of x²+y²+z².

#1020. Evaluate 53 x 55.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#811 2008-12-22 16:52:49

careless25
Real Member
Registered: 2008-07-24
Posts: 560

Re: 10 second questions

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#812 2008-12-22 19:55:48

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answers to #1011, #1012, #1013, #1014, #1015, and #1016:-
Answers to #1011, #1012, and #1015 are correct.
Since you know the answers to #1013 and #1014 are also treated as correct.
You have scored five out of six correct!
#1013 should have been

. I am sorry for the mistake. Since there was a typographic error, you deserved to be awarded a mark for that!
#1014 is of the form (a+b)²/(a+b)³
#1016 isn't correct sad

c3.jpg


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#813 2008-12-22 21:27:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1021. If a+b=20 and a²+b²=58, find the value of a³+b³.

#1022. What is the value of

?

#1023. What is the value of x if

/

#1024. If a² + b² = 30 and

, find
.

#1025. If

,
then what is the value of
?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#814 2008-12-23 02:47:49

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1026. A, B, and C can do a piece of work in 7 days, 14 days, and 28 days respectively. If they work together, in how many days would the work be finished?

#1027. The diameter of a cone is 1.4 centimeters. Its slant height is 4.2 centimeters. What is its curved surface area?

#1028. A train 150 meters long crosses a platform 175 meters long in 13 seconds. What is the speed of the train in kilometers per hour?

#1029. If A : B = 2 : 3, B : C = 4 : 5, C : D = 6 : 7, then what is A : D?

#1030. What is the value of

?

#1031. What is the value of

?

#1032. if 30% of 1860 + 40% of 820 = a% of 3544, what is the value of a?

#1033. If three-seventh of two-fifth of a number is 198, what is the number?

#1034. In a triangle ABC, find angle B if angles (B+C) = 130° and angle A = angle C?

#1035. What is the value of

?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#815 2008-12-23 12:24:04

bitus
Member
Registered: 2008-10-12
Posts: 20

Re: 10 second questions

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#816 2008-12-24 03:15:14

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answers to #914, #915, #916, #919, #923, #924, #925, #926, #927, #1016, #1021, #1024, #1025, #1026, and #1028:-

bitus, Excellent performance!!! All correct!!!

c1.jpg


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#817 2008-12-24 03:19:44

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1036.  The perimter of a rectangle is 32 centimeters and its area is 48 cm². Find its length and breadth.

#1037. The sum of cubes of certain natural numbers starting from 1 is 44100. Find the numbers.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#818 2008-12-24 03:33:14

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1038. What is the value of

?

#1039. What is the value of x if

?

#1040. What is the value of x if

?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#819 2008-12-24 04:50:36

Identity
Member
Registered: 2007-04-18
Posts: 934

Re: 10 second questions

Nowhere near 10 seconds but at least I did them in my head tongue

I would love to know the answer to 1038, but I'll let others have a go first (quick, someone answer it!)

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#820 2008-12-24 17:18:36

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answers to #1036, #1037, #1039, and #1040:-
All correct, Identity! Excellent!

gj1001.gif

I wish to inform you and the members viewing tthis thread that all questions aren't meant to be answered within 10 seconds; If you take a set of 20 questions, set the time limit as 200 seconds; this is because this thread is a mixed bag and contains both easy and relatively tough questions. Hence, you don't have to worry if you've taken a little more than 10 seconds for answering a question.

Regarding #1038, I shall post the solution in a day or two if there are no responses, or if the answers aren't correct.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#821 2008-12-24 18:07:30

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1041. 999 x 99 x 9 ÷ 99 ÷ 9 ÷ 3 = ?

#1042. What is the value of

?

#1043. What is the value of

?

#1044.

.

#1045. Find the value of

if
a²  + b²  = 117 and ab = 54.

#1046. What is the value of

?

#1047. Find the value of


if x+y+z=20, x²+y²+z² = 138 and xy+yz+xz=83.

#1048. What is the value of

?

#1049. What is the value of

?

#1050. What is the value of x if

?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#822 2008-12-24 21:31:08

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1051. What is the value of

?

#1052. What is the value of

?

#1053. What is the value of k if

?

#1054. What is the value of x if

?

#1055. The radius of a circle is 6 centimeters. What is the perpendicular distance from the center of the circle to a chord which is 8 centimeters in length?

#1056. The chords which are equidistant from the center of a circle are ..
(Choose from the four options given below:)
1. Perpendicular
2. Parallel
3. Equal
4. None of these

#1057. A vertical stick 15 centimeters long casts its shadow 10 centimeters long on the ground. At the same time, a flagpole casts a shadow 60 centimeters long. What is the height of the flagpole?

#1058. The areas of two similar triangles ABC and PQR are 36 cm² and 81 cm². What is the ratio of the corresponding altitudes AD and PS of the two triangles?

#1059. In a rhombus ABCD, AC and BD are the diagonals. What is AC² + BD² equal to (in terms of any one side of the rhombus, say AB?

#1060. Two circles of the same radius x intersect such that each passes through the center of the other. What is the length of the common chord?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#823 2008-12-25 05:33:45

careless25
Real Member
Registered: 2008-07-24
Posts: 560

Re: 10 second questions

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#824 2008-12-25 16:54:38

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

Answers to #1041, #1044, and #1057:-
All correct!!!

gj4.jpg


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#825 2008-12-25 17:03:55

ganesh
Administrator
Registered: 2005-06-28
Posts: 34,497

Re: 10 second questions

#1061. What is the value of

?

#1062. What is the value of

?

#1063. What is the least number of six digits exactly divisible by 456?

#1064. What is the value of

?

#1065. What is the value of a if 75% of 75 + a% of a = 98.5?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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