Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #131:-

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.

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #132:

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.

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #133:-

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.

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

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

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #127:-

Correct, JaneFairfax!

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

#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.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

#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?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**careless25****Real Member**- Registered: 2008-07-24
- Posts: 559

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

Offline

**careless25****Real Member**- Registered: 2008-07-24
- Posts: 559

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**careless25****Real Member**- Registered: 2008-07-24
- Posts: 559

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answers to #104, #105, #106, #107, and #108:

All correct, other than #108.

careless25,

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

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

careless25,

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

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #135:-

Correct, JaneFairfax!

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answers to #109, #110, #111, #112, #113, #114, and #115:-

careless25, the answers to #109, #111, #112, and #113 are correct.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

Answer to #124:

You are correct, JaneFairfax!

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**careless25****Real Member**- Registered: 2008-07-24
- Posts: 559

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

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!!!**

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 19,180

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, ______.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Offline

**careless25****Real Member**- Registered: 2008-07-24
- Posts: 559

Offline