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#201 2009-01-03 23:52:50

JaneFairfax
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Re: Brain Teasers

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#202 2009-01-04 00:03:10

ganesh
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Re: Brain Teasers

Answer to #131:-
Absolutely right, Janefairfax!
grtjb12.jpg

#132. A polygon has 44 diagonals. How many sides does it have?


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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#203 2009-01-04 00:22:09

JaneFairfax
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Re: Brain Teasers

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#204 2009-01-04 01:08:15

ganesh
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Re: Brain Teasers

Answer to #132:
You are correct, Janefairfax!
gggw1.jpg

#133. There are 7 men and 3 ladies. Find the number of ways in which a committee of 6 prsons can be formed if the committee is to have atleast 2 ladies.


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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#205 2009-01-04 01:53:52

JaneFairfax
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Re: Brain Teasers

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#206 2009-01-04 03:11:57

ganesh
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Re: Brain Teasers

Answer to #133:-
You are correct, JaneFairfax!
kip1001.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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#207 2009-01-04 04:44:11

JaneFairfax
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Re: Brain Teasers

Last edited by JaneFairfax (2009-01-04 04:45:40)

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#208 2009-01-05 01:55:08

ganesh
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Re: Brain Teasers

Answer to #127:-
Correct, JaneFairfax!
sprb1.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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#209 2009-01-05 03:08:45

ganesh
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Re: Brain Teasers

#133. The number of rectangles excluding squares from a rectangle of 9 x 6 size is _______.

#134. Out of 18 points in a plane, no three points are in the same straight line except five points which are collinear. Find
(i) the number of straight lines
(ii) the number of triangles which can be formed by joining them.


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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#210 2009-01-05 03:18:27

ganesh
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Re: Brain Teasers

#135. Let

.
Add all the digits of the resulting value, assume you get a value n.
Add all the digits of n, assume you get a value n'.
Add all the digits of n', assume you get n''.
Continue this process until you get a single digit.
What is the number you would get?


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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#211 2009-01-06 08:19:07

careless25
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Re: Brain Teasers

Last edited by careless25 (2009-01-06 08:19:17)

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#212 2009-01-06 08:41:50

careless25
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Re: Brain Teasers

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#213 2009-01-06 08:48:03

JaneFairfax
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Re: Brain Teasers

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#214 2009-01-06 08:50:03

careless25
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Re: Brain Teasers

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#215 2009-01-06 12:04:38

JaneFairfax
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Re: Brain Teasers

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#216 2009-01-06 20:58:41

ganesh
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Re: Brain Teasers

Answers to #104, #105, #106, #107, and #108:
All correct, other than #108.
careless25,
gggw2.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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#217 2009-01-06 21:22:14

ganesh
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Re: Brain Teasers

Answers to OOO : #94, #95, #96, #97, #98, #99, #100, and #101:

careless25,

Answers to #94, #98, #99, and #100 : Correct!

cgrn4.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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#218 2009-01-06 21:29:56

ganesh
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Posts: 21,307

Re: Brain Teasers

Answer to #135:-

Correct, JaneFairfax!

brlnt5.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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#219 2009-01-06 21:46:42

ganesh
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Registered: 2005-06-28
Posts: 21,307

Re: Brain Teasers

Answers to #109, #110, #111, #112, #113, #114, and #115:-
careless25, the answers to #109, #111, #112, and #113 are correct.

wd3003.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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#220 2009-01-06 21:55:50

ganesh
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Registered: 2005-06-28
Posts: 21,307

Re: Brain Teasers

Answer to #124:
You are correct, JaneFairfax!

grtjb11.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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#221 2009-01-07 02:08:27

careless25
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Posts: 559

Re: Brain Teasers

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#222 2009-01-07 02:37:24

ganesh
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Posts: 21,307

Re: Brain Teasers

careless25,
I thought from that point of view for a second, but didn't go any further! That was my mistake!
Your answer too is perfectly logical and fits in.
Good thought! Well done!!!


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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#223 2009-01-07 19:58:04

ganesh
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Registered: 2005-06-28
Posts: 21,307

Re: Brain Teasers

Complete the series:-

#136. 1, 6, 36, 216, ____

#137. 1973, 1979, 1987, 1993, 1997, 1999, ______.

#138. 5, 10, 13, 26, 29, 58, 61, _______.

#139. 11, 13, 17, 19, 23, 29, 31, 37, 41, _____.

#140. 3, 7, 6, 5, 9, 3, 12, 1, 15, ______.

#141. 11, 24, 67, 122, 219, _____.

#142. 64, 32, 35, 5, 22, 11, 14, _____.

#143. 0, 6, 24, 60, 120, ______.


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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#224 2009-01-08 03:49:09

JaneFairfax
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Posts: 6,868

Re: Brain Teasers

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#225 2009-01-08 08:20:41

careless25
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Re: Brain Teasers

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