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#201 2007-02-19 16:42:40
#202 2007-02-20 01:46:10
- ganesh
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Re: 10 second questions
Very well done, kylekatarn!
You are correct!
Excellent, pi man!
But for your answers to #132 and #136, your answers are all correct! Very well done! Please try these questions again!
139. If
what is the value of n?
140. Which of the four is the greatest?
7/22, 11/30, 12/31 or 4/11?
Character is who you are when no one is looking.
#203 2007-02-20 02:02:43
#204 2007-02-20 02:25:45
- ganesh
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Re: 10 second questions
pi man,
this happens to me quite often!
Once, while disbursing the salary, instead of putting Rs.12,500/- in a cover, I put Rs.15,200/- and I was wondering where Rs.2,700/- had vanished! I kept checking the covers, but I was unable to find out where I'd gone wrong!
It was a big relief when the person for whom it was intended, counted the money, and returned the excess!
141. How many degrees is a radian approximately?
142. If 3tanθ=4, what is the value of
Character is who you are when no one is looking.
#205 2007-02-20 02:52:37
#206 2007-02-20 02:58:41
- ganesh
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Re: 10 second questions
Very well done, pi man!
You are correct! The explanation and reasoning were interesting!
I use a simple technique.
To compare a/b and c/d, find the products ad and bc. ad would respresent a/b and bc would be for c/d.
If ad is greater, the first fraction is greater, and so on.
This way, be eliminating the lesser fractions, I'd reach the greatest!
Character is who you are when no one is looking.
#207 2007-02-20 03:01:24
- kylekatarn
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Re: 10 second questions
Last edited by kylekatarn (2007-02-20 03:07:41)
#208 2007-02-20 03:05:47
- ganesh
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Re: 10 second questions
Excellent, kylekatarn!
It would have been a good enough answer if someone had replied 57.
Well done!
Character is who you are when no one is looking.
#209 2007-02-20 03:09:04
- kylekatarn
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Re: 10 second questions
thanks, you have here a nice set of exercises (from the beginning) , why don't you compile them into a small book? a pdf or something like that:)
Last edited by kylekatarn (2007-02-20 03:09:30)
#210 2007-02-20 03:32:45
- pi man
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Re: 10 second questions
Ganesh - I agree with kylekatarn. Excellent work. Are you keeping track of which ones haven't been successfully answered? If so, maybe publish that list occasionally.
#211 2007-02-20 05:46:45
- pi man
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Re: 10 second questions
136. A certain sum of money doubles in 10 years at simple
interest. What is the rate of interest?
#212 2007-02-20 06:44:29
#213 2007-02-20 15:29:21
- ganesh
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Re: 10 second questions
Thanks pi man and kylekatarn!
I am happy posting the problems here, I do occasionally check for the problems which haven't been answered. Often, during the weekend. I shall post the solutions.
Thank again!
137. pi man, you are calculating assuming the interest is paid as compound interest, the question clearly says simple interest is paid.
139. I had the US Centillion in my mind, the reason being, in most places in the world, the US notation is followed, barring UK and some European nations, where a billion is a million million and so on.
143. How many odd numbers between 1 and 1000 are divisble by 7?
144. How many perfect powers exist between 1 and 1000? (perfect squares, perfect cubes, perfect fourth powers, etc.)
Character is who you are when no one is looking.
#214 2007-02-20 19:52:05
- ganesh
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Re: 10 second questions
145. How many cubic inches make a cubic foot?
146. How many square yards make a square mile?
Character is who you are when no one is looking.
#215 2007-02-20 21:39:42
- mathsyperson
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Re: 10 second questions
Pi man, the US Centillion is a million multiplied by a thousand 99 times. Or if you prefer, a thousand multipled by a thousand 100 times.
You can derive that by thinking about what they do to get from a million to a billion, then to a trillion, and so on.
Why did the vector cross the road?
It wanted to be normal.
#216 2007-02-21 00:17:06
- ganesh
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Re: 10 second questions
Excellent, mathsyperson! I wonder if 10 seconds would have been sufficient! it took me a little longer!
Character is who you are when no one is looking.
#217 2007-02-21 00:23:38
- ganesh
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Re: 10 second questions
147. What would be the successive sum of all the digits (that is, the sum of the repeatedly, until you get a single digit) of
148. What digit would end in?
Character is who you are when no one is looking.
#218 2007-02-23 15:51:24
- ganesh
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Re: 10 second questions
149. What is the lenght of the longest rod that can be placed inside a room 10m long, 10 m wide and 10 m high?
150. What is the probability of getting two black kings when two cards are drawn at random from a well shuffled pack of 52 cards, without replacement?
Character is who you are when no one is looking.
#219 2007-02-24 11:54:41
- JaneFairfax
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Re: 10 second questions
Last edited by JaneFairfax (2007-02-24 12:25:01)
#220 2007-02-24 16:02:55
- ganesh
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Re: 10 second questions
Excellent, JaneFairfax!
All your answers are correct!!!
Character is who you are when no one is looking.
#221 2007-02-28 15:30:19
- ganesh
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Re: 10 second questions
151. An equilateral triangle is formed by joining the
middle points of the sides of a given equilateral triangle. A
third equilateral triangle is formed inside the second
equilateral triangle in the same way. If the process continues
indefinitely, then what is the sum of areas of all such triangles when
the side of the first triangle is 16 cm is?
152. What is the sum of first 100 terms which are
common to both the progressions
17, 21, 25, ... and 16, 21, 26, ....?
Character is who you are when no one is looking.
#222 2007-03-01 01:15:56
- mathsyperson
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Re: 10 second questions
Why did the vector cross the road?
It wanted to be normal.
#223 2007-03-01 02:13:27
- Dross
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Re: 10 second questions
Last edited by Dross (2007-03-01 03:31:22)
Bad speling makes me [sic]
#224 2007-03-01 09:00:55
#225 2007-03-01 10:19:50
- power man
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Re: 10 second questions
true
I hate people who hate people.
most people make mistakes, butt not me!
why is it when you are writing something important you run out of spa