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

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

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

Absolutely right, Janefairfax!

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

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

You are correct, Janefairfax!

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

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

You are correct, JaneFairfax!

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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Registered: 2007-02-23
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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
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

Correct, JaneFairfax!

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
Registered: 2005-06-28
Posts: 25,062

### 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
Registered: 2005-06-28
Posts: 25,062

### 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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Registered: 2008-07-24
Posts: 559

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

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

careless25
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## #215 2009-01-06 12:04:38

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

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

Answers to #104, #105, #106, #107, and #108:
All correct, other than #108.
careless25,

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
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

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

careless25,

Answers to #94, #98, #99, and #100 : 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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## #218 2009-01-06 21:29:56

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

Correct, JaneFairfax!

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
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

Answers to #109, #110, #111, #112, #113, #114, and #115:-
careless25, the answers to #109, #111, #112, and #113 are 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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## #220 2009-01-06 21:55:50

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

You are correct, JaneFairfax!

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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Registered: 2008-07-24
Posts: 559

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

ganesh
Registered: 2005-06-28
Posts: 25,062

### Re: Brain Teasers

careless25,
I thought from that point of view for a second, but didn't go any further! That was my mistake!
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
Registered: 2005-06-28
Posts: 25,062

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

careless25
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