Brain Teasers

Jai Ganesh · 2009-01-19 03:28:54

Answer to #159:-
Perfect!

Jai Ganesh · 2009-01-19 03:36:38

#168. In the sequence1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, ...... where n consecutive terms have the value of n, what would the

term be?

#169. If

, then what is the value of
?

JaneFairfax · 2009-01-19 04:04:37

Jai Ganesh · 2009-01-19 16:11:19

Answers to #168 and #169:-
Your answer to #168 is correct!

Please check your answer to #169 again. I should tell you that's a bit tricky question

careless25 · 2009-01-19 16:49:03

Ganesh why does your count for questions go randomly.
for example:
http://www.mathisfunforum.com/viewtopic … 16#p101916
thats questions till 160 and them a few posts after you jump to 130s.
any reason behind this?

Jai Ganesh · 2009-01-20 03:47:23

careless25,
Thanks for poiting that out.
Careless mistakes, avoidable ones.
They were certainly not intended to be numbered randomly.
If you have come across any other such mistake, I may please be informed.

I hope that this is the only one or there are only a few such mistakes!
T h a n k s a g a i n !!!

Jai Ganesh · 2009-01-20 21:33:09

#200. Salim invested a total of $10,000 for a period of one year in a bank. He deposited a part of the money under a scheme which paid 6% simple interest per annum which could be withdrawn any time during the year. He invested the remaining money in another scheme that paid 8% simple interest per annum which had to be withdrawn only after completion of one year. If the total interest earned was #640, how much money did he invest at 6% interest per annum?

(Thanks, JaneFairfax! The question number is 200 now.)

Last edited by Jai Ganesh (2009-01-21 03:02:35)

JaneFairfax · 2009-01-20 23:17:40

The question above should be #200.

Jai Ganesh · 2009-01-21 03:05:56

Answer to #199:
PLEASE try again! You've made a minor mistake, I am sure you'd be able to spot it yourself! But the problem can be solved in a much simple way, which I shall disclose to you after you post the correct answer!

JaneFairfax · 2009-01-21 03:18:48

Jai Ganesh · 2009-01-21 03:38:09

Precisely! That was a careless mistake!
This is an admirable quality in a person, trying to correct the mistake he/she has done!
Good work, JaneFairfax!!!

careless25 · 2009-01-21 16:54:48

ganesh wrote:

careless25,
Thanks for poiting that out.
Careless mistakes, avoidable ones.
They were certainly not intended to be numbered randomly.
If you have come across any other such mistake, I may please be informed.
I hope that this is the only one or there are only a few such mistakes!
T h a n k s a g a i n !!!

Yes i know the trick, have been tricked and will never again be tricked by that type of question!!
I was just curios about it, i thought it might have meant something to you.

Jai Ganesh · 2009-01-21 17:11:00

careless25,
Thanks again, it certainly did.

careless25 · 2009-01-21 17:19:26

Nice trick once again, never seen that 1 before.
Took me a second to get it.

Jai Ganesh · 2009-01-22 02:17:06

#201. A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the rate of 2 meters/second. How fast is he approaching the wall?

JaneFairfax · 2009-01-22 03:33:29

Jai Ganesh · 2009-01-22 03:37:15

Answer to #201:
Correct, JaneFairfax!

Jai Ganesh · 2009-01-22 03:43:46

#202.
(a) The sum of two numbers is 28/25 of the first number. The second number is what percentaghe of the first number?

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

#203. What is the value of

?

JaneFairfax · 2009-01-22 05:13:27

Jai Ganesh · 2009-01-22 19:33:39

Answer to #202 (a):

Jai Ganesh · 2009-01-23 00:40:59

#204. What is the sum of the following series?

.

#205. What is the remainder obtained when

?

#206. If n is any positve integer, then what is the greatest number

is divisible by for any value of n?

JaneFairfax · 2009-01-23 01:10:53

Jai Ganesh · 2009-01-23 04:43:55

Answers to #204, #205, and #206:

All correct, JaneFairfax!!!

Jai Ganesh · 2009-01-23 19:28:56

#207. Consider the sets

where n=1, 2, 3, 4, 5, 6, ....96. How many of these sets contain 6 or any integral multiple of 6 (i.e. 6, 12, 18, ..etc.)?

#208. How many common roots exist between the two equations

?

#209. Express N in terms of M or M in terms of N if

.

#210. What is the remainder in the operation

?

JaneFairfax · 2009-01-23 23:48:56

Math Is Fun Forum

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