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#1051 2009-03-15 09:38:03

Devantè
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Re: 10 second questions

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#1052 2009-03-15 09:46:35

Devantè
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Re: 10 second questions

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#1053 2009-03-15 21:08:30

ganesh
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Registered: 2005-06-28
Posts: 24,651

Re: 10 second questions

Answers to #1380, #1427, #1431, and #1627:-
All correct, Devantè!
xln2.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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#1054 2009-03-15 22:29:37

ganesh
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Re: 10 second questions

#1711. What is the value of

?

#1712. What is the value of

?

#1713. What is the value of 1 + 11 + 21 + 31 +41 + ...... + 1001?


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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#1055 2009-03-16 03:48:31

ganesh
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Re: 10 second questions

#1714. A is thrice as good a workman as B and takes 20 days less to do a piece of work than B. In how many days can B do the work?

#1715. A train 700 meters long is running at the speed of 72 kilometers per hour. If it crosses a tunnel in 1 minutes, then what is the length of the tunnel in meters?

#1716. A man can row three quarter of a kilometer against the stream in 11 and a quarter minutes. If the speed of the stream is 1 kilometer per hour, what is the speed of the man rowing in still water?

#1717. If three workers working 8 hours a day finish a work in 5 days, then in how many days can one worker, working 10 hours a day finish the same work?

#1718. If $516 is divided among A, B, and C such that A receives 25% more than B and B receives 25% less than C, then what is the amount C receives?

#1719. R travels at the rate of 3 km/hour and reaches his destination 15 minutes late. If he travels at the rate of 4 kn/hour, he reaches15 minutes earlier. What is the distance R has to travel?

#1720. The simple interest on a sum of money at 5% per annum interest is $48 for 4 years. What would be the simple interest for the same sum for 5 years at the rate of 4% per annum?


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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#1056 2009-03-16 06:19:47

Devantè
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Re: 10 second questions

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#1057 2009-03-16 10:29:42

JaneFairfax
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Re: 10 second questions

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#1058 2009-03-16 17:06:28

ganesh
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Re: 10 second questions

Answer to #1713:-
Correct, JaneFairfax!
wd4445.gif
I guess, it was a minor calculation mistake, Devantè.
Approximately, a number close to 50 multiplied by a number close to 1000 should produce a number close to 50,000. But in 10 seconds, nobody may think of all these things!


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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#1059 2009-03-16 18:15:25

ganesh
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Re: 10 second questions

#1721. If a car travels the first 40 kilometers at a speed of 20 km/hour, the next 50 kilometers at a speed of 25 km/hour and the final 90 kilometers at a speed of 15 km/hour, what is the average speed of the car for the entire distance?

#1722. Which is the smallest odd prime number 12345674 is divisible by?


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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#1060 2009-03-17 01:10:32

JohnnyReinB
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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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#1061 2009-03-17 03:03:15

ganesh
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Re: 10 second questions

Answer to #1721:-


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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#1062 2009-03-18 04:44:49

ganesh
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Re: 10 second questions

#1723. In a Geometric Progression with first term a and common ratio r, what is the Arithmetic Mean of the first five terms?

#1724. What is the sum of the integers from 1 to 100 that are divisible by 2 or 5?

#1725. What is the value of
(1)[sub]2[/sub] + (11)[sub]2[/sub] + (111)[sub]2[/sub] + (1111)[sub]2[/sub] + (11111)[sub]2[/sub]?


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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#1063 2009-03-18 06:40:03

ganesh
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Re: 10 second questions

#1726.Eighteen football teams take part in a tournament and every team meets every other team twice. How many matches are played in the tournament?

#1727. Out of 40 children, 30 can swim, 27 can play chess and only 5 can do neither. How many children can swim only?

#1728. What is the value of

?

#1729. If m and n are the roots of the equation 4x[sup]2[/sup] - 4x - 1 = 0, then what is the value of m[sup]3[/sup] + n[sup]3[/sup]?


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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#1064 2009-03-18 08:17:48

ganesh
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Re: 10 second questions

#1730. What is the number of 2 digit even numbers that can be formed from the digits 1, 2, 3, 4, and 5, repetition not being allowed?

#1731. The first and eighth terms of a Geometric Progression are x[sup]-4[/sup] and x[sup]52[/sup] respectively. What is the second term?

#1732. 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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#1065 2009-03-18 19:31:40

ganesh
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Re: 10 second questions

#1733. What is the value of

?

#1734. What is the value of

?

#1735. 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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#1066 2009-03-18 22:24:41

ganesh
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Re: 10 second questions

#1736. Find the 10[sup]th[/sup] term of an Arithmetic Progression whose first term is 12 and the common difference is 5.

#1737. Find the sum

.

#1738. If A = {a, b, c, d, e}, B = {b, d, f, g}, and C = {b, e, f, h}, find

.

#1739. If the straight line 7x - 5y = k passes through the point (1,1), find the value of k.

#1740. In a Geometric Progression, the fourth term is 27 and the seventh term is 729. Find the fourth term.


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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#1067 2009-03-19 04:05:11

ganesh
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Registered: 2005-06-28
Posts: 24,651

Re: 10 second questions

#1741. Find the value of 104 x 96.

#1742. If x = 2 + √3, find the value of

.

#1743. In a right angled triangle,

.
Find the value of tan A x cosec A.

#1744. Find the point of intersection of the straight line 2x-3y = 6 with the y-axis.

#1745. Three solid spheres of radii 3 cm, 4cm, and 5 cm are melted and a bigger spher is formed. Find the radius of the bigger sphere.


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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#1068 2009-03-19 06:56:14

ganesh
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Posts: 24,651

Re: 10 second questions

#1746. Solve for x and y:


.

#1747. Find the value of k for which the following system of equations has infinite solutions:
kx + 3y = 3
12x + ky = 6.


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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#1069 2009-03-19 17:18:25

ganesh
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Re: 10 second questions

#1748. What is th sum of the Geometric Progression
1, 3, 9, 27, .... to 9  terms?

#1749. What is the remainder when x[sup]3[/sup] + x[sup]2[/sup] + 5 is divided by (x-1)?

#1750. What is the square root of 36a[sup]16[/sup]?

#1751. What is the equation of the straight line passing through
(2, -3)  an parallel to the x-axis?

#1752. What is the square root of 9x[sup]2[/sup]+30x+25?

#1753. In a cyclic quadrilateral ABCD, the measure of angle A is 5x degrees and measure of angle C is 3x degrees. What is the value of x in degrees?

#1754. The center of a circle is (-6,4). A diameter of the circle has its one end at the origin. What are the coordinates of the other end?

#1755. Find the Least Common Multiple 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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#1070 2009-03-20 05:05:41

ganesh
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Registered: 2005-06-28
Posts: 24,651

Re: 10 second questions

#1756. The sum of a number and its reciprocal is

.
Find the number.

#1757. Which term of the Arithmetic Progression 21, 42, 63, .... is 420?

#1758. A cone has radius 7 cm and slant height 25 cm. Find the curved surface area of the cone.

#1759. Find m if 5x[sup]5[/sup] - 9x[sup]3[/sup] + 3x  + m leaves a remainder 7 when divided by
(x + 1).

#1760. Solve:- x[sup]2[/sup] - x - 12 = 0.

Last edited by ganesh (2009-03-20 05:07:05)


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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#1071 2009-03-21 03:57:16

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

Re: 10 second questions

















Is it just me or are most of the questions getting just a little bit easier?


"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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#1072 2009-03-21 05:12:00

ganesh
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Registered: 2005-06-28
Posts: 24,651

Re: 10 second questions

Answers to #1723, #1727, #1736, #1738, #1739, #1740, #1742, #1744, #1745, #1747, #1750, #1751, #1752, #1754, #1755, #1756, and #1757:-

All the answers are correct, JohnnyReinB, other than #1723, #1739, and #1755.

wd4449.gif


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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#1073 2009-03-21 05:33:24

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

Re: 10 second questions

ay, LCM, haha

curious, what's the answer to 1739?


"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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#1074 2009-03-21 05:43:34

ganesh
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Registered: 2005-06-28
Posts: 24,651

Re: 10 second questions

Answer to #1755:
Correct, JohnnyReinB!


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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#1075 2009-03-21 20:27:26

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

Re: 10 second questions

ahh, yes.
Oh my, I keep on forgetting 7-5=2  big_smile
For some weird reason, my brain insists it's 3, as my answer suggests, haha.


"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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