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

You are not logged in.

#151 2008-11-18 16:56:56

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#52. Factorize:-

x³ - 23x² + 142x - 120.


Character is who you are when no one is looking.

Offline

#152 2008-11-20 17:54:40

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#53. Find the square root of 7 + 3√5.

#54. Find the square root of 53 - 12√10.


Character is who you are when no one is looking.

Offline

#153 2008-12-09 18:51:31

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#55. If 47.2506 = 4A +7/B + 2C + 5/D + 6 E, then what is the value of 5A  + 3B +6C + D  + 3E equal to?
(1) 53.6003  (2) 53.603  (3) 153.6003  (4) 213.0003


Character is who you are when no one is looking.

Offline

#154 2008-12-15 01:47:26

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#56.  Arrange the following fractions in the descending order:-

.

#57. Arrange the following in the ascending order:-

.


Character is who you are when no one is looking.

Offline

#155 2008-12-24 17:27:12

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#58. Find the square root of

.

#59. If

be the sum of n terms of three Arithmetic series, the first erm of each being 1 and the respective common differences 1, 2, and 3, prove that
.

#60. Find the three numbers in Geometric progression such that their sum is

and the product of their reciprocals is
.


Character is who you are when no one is looking.

Offline

#156 2008-12-30 07:23:15

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#157 2008-12-30 17:54:05

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #56:
You are correct, JaneFairfax!
wd2003.jpg


Character is who you are when no one is looking.

Offline

#158 2009-01-01 17:22:44

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#61. Mike can walk a certain distance in 40 days when he rests 9 hours a day. How long would he take to walk twice the distance, twice as fast and rest twice as long each day?


Character is who you are when no one is looking.

Offline

#159 2009-01-02 02:45:27

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#62. What is a:b equal to if

?


Character is who you are when no one is looking.

Offline

#160 2009-01-02 05:31:19

Identity
Member
Registered: 2007-04-18
Posts: 934

Re: *** Problems

ganesh wrote:

#62. What is a:b equal to if

?

Last edited by Identity (2009-01-02 05:46:25)

Offline

#161 2009-01-02 16:39:05

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #62. You are correct, Identity!
gggw8.gif


Character is who you are when no one is looking.

Offline

#162 2009-01-02 16:54:02

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#63. Find the value of

.

#64. Simplify:-

.


Character is who you are when no one is looking.

Offline

#163 2009-01-02 22:17:19

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#164 2009-01-03 00:55:34

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #63:-
You are correct, JaneFairfax!
gggw9.gif


Character is who you are when no one is looking.

Offline

#165 2009-01-03 02:05:50

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#65. A and B earn in the ratio 2:1. They spend in the ratio 5:3 and save in the ratio 4:1. Determine the monthly income of each if the monthly savings of both A and B together is $5000.


Character is who you are when no one is looking.

Offline

#166 2009-01-03 08:40:11

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#167 2009-01-03 17:38:35

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #61:-
You are perfectly right, Janefairfax!
gdjb1.jpg


Character is who you are when no one is looking.

Offline

#168 2009-01-03 17:56:40

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

#66. Three numbers form an increasing Geometric Progression. If the middle number is doubled, the new numbers are in Arithmetic Progression. What is the common ratio of the Geometric Progression?

#67. Three distinct real numbers a,b,c are in Geometric Progression such taht a+b+c=xb; then which of the following is true?
(1) 0<x<1
(2) -1<x<3
(3) x<-1 or x>3
(4) -1<x<2

#68. If A and G be the Arithmetic Mean and Geometric Mean of two numbers in the ratio m:n, then the numbers are:
(1)


(2)

(3)

(4)


Character is who you are when no one is looking.

Offline

#169 2009-01-03 23:10:21

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#170 2009-01-04 00:19:06

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #68:-
Very good work, JaneFairfax! You're correct!
grtjb8.jpg

#69. Find the value of x if

?


Character is who you are when no one is looking.

Offline

#171 2009-01-04 00:31:51

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#172 2009-01-04 00:50:37

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #66:-
Perfectly right, Janefairfax!
grtjb10.jpg

#70. What is the value of x if

?


Character is who you are when no one is looking.

Offline

#173 2009-01-04 01:01:58

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

#174 2009-01-04 01:21:21

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,835

Re: *** Problems

Answer to #70:-
Correct, Janefairfax! Keep it up!
xln3.jpg

#71. What is the value of x if


Character is who you are when no one is looking.

Offline

#175 2009-01-04 01:56:53

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

Re: *** Problems


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

Offline

Board footer

Powered by FluxBB