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#1626 2012-01-09 22:48:49
- 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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#1627 2012-01-10 01:42:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution #1358 is correct. Brilliant!
#1359. If the price of a book is first decreased by 25% and then increased by 20%, what is the net change in the price of the book?
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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#1628 2012-01-10 01:48:10
- 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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#1629 2012-01-10 22:38:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1359 is correct. Good work!
#1360. By selling a tape-recorder for $950, I lose 5%. What percent shall I gain by selling it for $1040?
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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#1630 2012-01-11 00:11:51
- 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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#1631 2012-01-11 01:10:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1360 is correct. Neat work!
#1361. Find the sum of the digits of the smallest number by which 1440 be multiplied so that it becomes a perfect cube.
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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#1632 2012-01-11 01:19:31
- 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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#1633 2012-01-11 22:43:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1361 is correct. Neat work!
#1362. If
, then what is the value close to?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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#1634 2012-01-11 23:35:07
- 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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#1635 2012-01-12 01:52:50
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The
Good attempt!
#1363.
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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#1636 2012-01-12 01:59:51
- 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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#1637 2012-01-13 03:05:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
#1364.
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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#1638 2012-01-13 03:13:09
- 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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#1639 2012-01-13 22:59:07
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1364 is correct. Smart work!
#1365. If the cost price of 12 oranges is equal to selling price of 10 oranges, what is the percentage of profit?
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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#1640 2012-01-13 23:50:18
- 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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#1641 2012-01-15 00:29:43
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1365 is perfect. Well done!
#1366. The ratio of the number of boys to that of girls in a school is 4:1. If 75% of boys and 70% of the girls are scholarship-holders, then what is the percentage of students who do not get scholarship?
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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#1642 2012-01-15 00:33:14
- 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
#1643 2012-01-15 01:09:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1366 is correct. Stupendous!
#1367. In what time (in seconds) would a train 100 meters long cross an electric pole, if its speed be 144 kilometers per hour?
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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#1644 2012-01-15 01:11:45
- 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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#1645 2012-01-15 01:22:51
- 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.
Offline
#1646 2012-01-15 01:33:54
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution #1367 is correct. Good work!
#1368. A trader's marked price is 30 % above the cost price. He allows his customers 10% discount on the marked price. What profit (in percent) does he make?
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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#1647 2012-01-15 01:35:10
- 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
#1648 2012-01-15 20:56:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1368 is correct. Good work!
#1369. Which term of the series 72 + 63 + 54 + .... is zero?
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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#1649 2012-01-15 20:58:20
- 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
#1650 2012-01-16 01:41:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: Oral puzzles
Hi bobbym,
The solution #1369 is correct. Well done!
#1370. 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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