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.

#6151 2015-11-05 00:48:53

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6152 2015-11-05 03:05:54

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The two solutions in #5560 is perfect! Excellent!

#5561. Solve:

.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6153 2015-11-06 06:46:52

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6154 2015-11-06 07:53:51

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution set #5561 is perfect! Splendid!

#5562. A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
(i) a black king
(ii) either a black card or a king
(iii) black and a king
(iv) a jack, queen, or a king
(v) neither a heart nor a king.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6155 2015-11-06 17:57:11

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6156 2015-11-06 18:49:56

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solutions (five parts) in #5526 are correct! Exemplary!

#5527. If

, find
.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6157 2015-11-07 07:35:06

math9maniac
Member
From: Tema
Registered: 2015-03-30
Posts: 443

Re: 10 second questions


Only a friend tells you your face is dirty.

Offline

#6158 2015-11-07 07:37:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6159 2015-11-07 08:47:36

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi math9maniac and bobbym,

The solution #5527 is correct! Excellent, math9maniac abd bobbym!

#5528. If

, find the value of
.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6160 2015-11-08 02:43:07

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6161 2015-11-08 11:24:59

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5528 is perfect! Immaculate!

#5529. If

, find the value of
.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6162 2015-11-10 12:08:22

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6163 2015-11-10 15:35:42

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5529 is correct! Excellent!

#5530. The sum of a two digit number and the number formed by interchanging the digits is 132. If 12 is added to the number, the new number becomes five times the sum of the digits. Find the number.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6164 2015-11-11 17:32:37

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6165 2015-11-11 19:57:26

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5530 is correct! Neat work!

#5531. The product of Shikha's age five years ago and her age 8 years later is 30, her age at both given in years. Find her present age.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6166 2015-11-12 11:02:10

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6167 2015-11-12 11:56:10

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5531 is correct! Good work!

#5532. The sum of the reciprocals of of Rehman's age (in years) 3 years ago and 5 years from now is 1/3. Find his present age.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6168 2015-11-12 23:25:08

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6169 2015-11-13 00:34:21

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5532 is correct! Good work!

#5533. Find the value of 'x' in each of the following:


.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6170 2015-11-13 19:53:51

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6171 2015-11-13 21:06:12

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solutions (two parts) in #5533 are correct! Excellent!

#5534. The sum of ages of a father and his son is 45 years. Five years ago, the product of their age (in years) was 124. Determine their present ages.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6172 2015-11-14 05:02:29

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6173 2015-11-14 09:38:22

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5534 is correct! Neat work!

#5535. An unbiased die is thrown. What is the probabiliyy of getting
(i) an even number or a multiple of 3
(ii) an even number and a multiple of 3
(iii) a number 3 or 4
(iv) an odd number
(v) a number less than 5
(vi) a number greater than 3
(vii) a number between 3 and 6?


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

#6174 2015-11-15 21:33:37

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#6175 2015-11-15 22:36:08

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,423

Re: 10 second questions

Hi bobbym,

The solution #5535 (seven parts) are all correct! Stupendous performance!

#5536. A spherical ball of radius 3 cm is melted and recast into three spherical balls. The radii of two of the balls are 1.5 cm and 2 cm respectively. Determine the radius / diameter of the third ball.


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

Offline

Board footer

Powered by FluxBB