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#2051 2012-07-31 01:55:58
- 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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#2052 2012-07-31 22:56:08
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1544 is perfect. Good work!
#1545. A train is moving at a speed of 132 kilometers per hour. If the length of the train is 110 meters, how long would it take to cross a platform 165 meters long?
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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#2053 2012-07-31 22:59:56
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2054 2012-07-31 23:48:26
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#2055 2012-08-01 19:32:16
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Hi guys;
This took me longer than expected to answer >_<
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#2056 2012-08-02 00:53:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym, anonimnystefy, and Denominator,
The solution #1545 is correct. Good work!
#1546. Two pipes A and B can fill the tank in 20 hours and pipe A alone can fill the tank in 36 hours. Find the time taken by B alone to fill the tank.
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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#2057 2012-08-02 01:01:26
- 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.
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#2058 2012-08-02 01:13:49
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#2059 2012-08-03 01:03:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution #1546 is perfect. Neat work!
#1547. What Principal would yield $60 as Simple Interest at 6% per annum in 5 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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#2060 2012-08-03 02:10:31
- 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.
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#2061 2012-08-03 15:47:29
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Hey
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#2062 2012-08-06 00:00:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and Denominator,
The solution #1546 is perfect. Good work!
#1548. Find the missing figure: 0.25% of ? = 0.04
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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#2063 2012-08-06 01:00:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2064 2012-08-06 07:04:45
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Hey ganesh
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#2065 2012-08-08 00:21:35
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and Denominator,
Good work, bobbym!
#1549. Difference of two numbers is 1660. If 7.5% of one number is 12.5% of the other number, find the two 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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#2066 2012-08-08 00:24:13
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2067 2012-08-08 19:07:46
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Oh I seeeee
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#2068 2012-08-08 23:24:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and Denominator,
The solution #1549 is correct. Brilliant!
#1550. It costs $1 to photocopy a sheet of paper. However, 2% discount is allowed on all photocopies done after first 1000 sheets. How much would it cost to copy 5000 sheets of paper?
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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#2069 2012-08-09 02:18:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2070 2012-08-09 19:20:42
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Hey ganesh;
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#2071 2012-08-09 23:52:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and Denominator,
The solution #1550 is correct. Excellent!
#1551. The ratio of the base and the height of a cylinder is 2:3. If its volume is 12936 cubic cm, what is the total surface area of the cylinder? (Use pi = 22/7)
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
#2072 2012-08-10 02:45:56
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#2073 2012-08-10 11:43:10
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: Oral puzzles
Hi ganesh
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#2074 2012-08-10 22:40:13
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,424
Re: Oral puzzles
Hi bobbym and Denominator,
Excellent, Denominator! Keep it up!
#1552. The curved surface area of a cylindrical pillar is 264 meters square and its volume is 924 cubic meters. Find the ratio of its diameter to its height.
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
#2075 2012-08-10 22:47:59
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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