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#3976 2015-09-04 02:12:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#3977 2015-09-04 08:54:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi zetafunc and bobbym,
The solution #2478 is perfect! Splendid, zetafunc and bobbym!
#2479.A person saved $640 during the first month, $720 in the second month and $800 in the third month. If he continues his savings in this sequence, what will be his savings in the 25th month?
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.
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#3978 2015-09-04 15:55:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#3979 2015-09-04 16:54:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #2479 is correct! Marvelous!
#2480. A person has deposited $25,000 in an investment which yields 14% simple interest annually. Does these amounts (principal + interest) form an Arithmetic Progression? If so, determine the amount of investment after 20 years.
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.
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#3980 2015-09-05 21:53:04
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3981 2015-09-05 23:04:03
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #2480 is correct! Smart work!
#2481. 37 pens and 53 pencils together cost $320, while 53 pens and 37 pencils together cost $400. Find the cost of a pen and that of a pencil.
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.
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#3982 2015-09-06 03:17:16
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#3983 2015-09-06 05:30:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3984 2015-09-06 06:45:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi zetafunc and bobbym,
The solution #2481 is correct! Good work, zetafunc and bobbym!
#2482. Sum of two numbers is 35 and their difference is 13. Find the numbers.
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.
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#3985 2015-09-06 06:47:40
#3986 2015-09-06 10:55:31
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi math9maniac, zetafunc, and bobbym,
Corrected : The solution #2481 is correct, math9maniac and bobbym! Good work!
The solution #2482 is correct, zetafunc! Neat work!
#2483. 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.
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#3987 2015-09-07 00:41:31
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3988 2015-09-07 03:39:44
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#3989 2015-09-07 07:36:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and math9maniac,
The solution #2483 (both values) is correct! Brilliant!
#2484. 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.
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#3990 2015-09-07 18:52:36
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#3991 2015-09-07 20:07:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3992 2015-09-07 23:40:31
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi math9maniac and bobbym,
The solution #2484 is correct! Magnificent!
#2485. If -4 is a root of the quadratic equation
and the quadratic equation has equal roots, find the value of 'k'.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.
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#3993 2015-09-07 23:52:21
#3994 2015-09-08 01:51:19
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi zetafunc,
The solution #2485 is perfect! Splendid!
#2486. A 20 meter deep well with diameter 7 meters is dug and the earth from digging is evenly spread out to form a platform 22 meters by 14 meters. Find the height of the platform.
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.
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#3995 2015-09-08 14:13:20
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3996 2015-09-08 17:48:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #2486 is correct! Marvelous!
#2487. If (-4,0) and (4,0) are two vertices of an equilateral triangle, find the coordinates of the third vertex.
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.
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#3997 2015-09-09 00:37:01
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#3998 2015-09-09 01:06:08
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi math9maniac,
The solution #2487 is perfect! Keep it up!
#2488. 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.
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#3999 2015-09-09 07:44:02
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#4000 2015-09-09 10:04:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi math9maniac,
The solution #2488 is correct! Good work!
#2489. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 kilometers per hour, what is the length of the platform?
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.
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