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#2326 2012-12-03 18:41:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1662 is correct. Good work!
#1663. Which term of the Arithmetic Progression 3, 8, 13, 18 ..... is 78?
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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#2327 2012-12-03 20:13:15
- 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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#2328 2012-12-04 18:19:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
#1664. If the 3rd and the 9th terms of an Arithmetic Progression are 4 and -8 respectively, which term of this Arithmetic Progression 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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#2329 2012-12-04 18:26:32
- 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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#2330 2012-12-05 19:02:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1664 is correct. Neat work!
#1665. Two APs have the same common differences. The difference between their 100th terms is 100, what is the difference between their 1000th terms?
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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#2331 2012-12-05 20:48:29
- 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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#2332 2012-12-06 18:46:15
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1665 is perfect. Neat work!
#1666. For what value of n, are the nth terms of two Arithmetic Progression : 63, 65, 67, .... and 3, 10, 17, .... equal?
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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#2333 2012-12-06 19:16:30
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: Oral puzzles
igloo myrtilles fourmis
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#2334 2012-12-06 21:51:05
- 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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#2335 2012-12-07 19:13:07
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi John E. Franklin and bobbym,
The solution #1666 is perfect. Neat job!
#1667. Determine the Arithmetic Progression whose third term is 16 and the 7th term exceeds the 5th term by 12.
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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#2336 2012-12-07 19:19:50
- 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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#2337 2012-12-07 21:14:36
- 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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#2338 2012-12-08 19:31:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1667 is correct. Good work!
#1668. Find the sum of the following Arithmetic Progression : 0.6, 1.7, 2.8, to 100 terms.
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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#2339 2012-12-08 20:58:27
- 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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#2340 2012-12-09 19:04:41
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1668 is perfect. Fabulous!
#1669. Find the sum of the Arithmetic Progression to 11 terms : 1/15, 1/12, 1/10, ......
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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#2341 2012-12-09 21:29:59
- 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
#2342 2012-12-10 19:37:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1669 is correct. Marvelous!
#1670. In an Arithmetic Progression, given a = 7, a[sub]13[/sub] = 35, find d and S[sub]13[/sub].
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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#2343 2012-12-10 19:44:21
- 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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#2344 2012-12-11 18:22:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1670 is correct. Good work!
#1671. In an Arithmetic Progression, given d = 5, S[sub]9[/sub] = 75, find a and a[sub]9[/sub].
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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#2345 2012-12-11 20:44:41
- 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
#2346 2012-12-12 18:59:20
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1671
#1672. The first and the last terms of an Arithmetic Progression are 17 and 350 respectively. If the common difference is 9, how many terms are there and what is their sum?
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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#2347 2012-12-12 19:28:28
- 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
#2348 2012-12-13 17:54:43
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1672 is correct. Brilliant!
#1673. If the sum of first 7 terms of an Arithmetic Progression is 49 and that of 17 terms is 289, find the sum of first n terms.
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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#2349 2012-12-13 20:53:27
- 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
#2350 2012-12-14 21:56:27
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,403
Re: Oral puzzles
Hi bobbym,
The solution #1673 is perfect. Good work!
#1674. Find the sum of the odd numbers between 0 and 50.
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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