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#676 2016-08-02 16:54:48

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions in SP#311 (two values) are correct. Neat work, bobbym!

SP#312.In an Arithmetic Progression, given d = 5,

, find a and
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#677 2016-08-02 17:00:32

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

Re: Series and Progressions

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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#678 2016-08-03 16:42:08

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions in SP#312 are correct. Neat work, bobbym!

SP#313. In as Arithmetic Progression, given a = 2, d = 8,

find n and
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#679 2016-08-04 04:13:59

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

Re: Series and Progressions

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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#680 2016-08-04 16:31:22

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions in SP#313 are correct. Good work, bobbym!

SP#314. In an Arithmetic Progression, given a = 8,

find n and d.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#681 2016-08-04 17:25:26

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

Re: Series and Progressions

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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#682 2016-08-05 21:14:59

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions in SP#314 are correct. Good work, bobbym!

SP#315. In an Arithmetic Progression, given

, find n and a.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#683 2016-08-06 03:25:04

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

Re: Series and Progressions

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

#684 2016-08-06 16:56:42

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions in SP#315 are correct. Good work, bobbym!

SP#316. In an Arithmetic Progression, given a = 3, n = 8,

find d.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#685 2016-08-06 20:52:06

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

Re: Series and Progressions

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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#686 2016-08-07 17:32:47

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#316 is correct. Well done, bobbym!

SP#317. Find the sum of first 25 terms of the Arithmetic Progression whose second term in 9 and 4th term is 21.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#687 2016-08-07 17:39:06

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

Re: Series and Progressions

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

#688 2016-08-08 17:55:30

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#317 is correct. Excellent, bobbym!

SP#318. Find the sum 3 + 11 + 19 + ..... + 803.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#689 2016-08-08 18:00:32

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

Re: Series and Progressions

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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#690 2016-08-09 17:12:49

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#318 is correct. Excellent, bobbym!

SP#319. The first and the last terms of an Arithmetic Progression are -4 and 146 and the sum of the A.P. is 7171. Find the number of terms in the A.P. and the common difference.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#691 2016-08-09 19:26:38

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

Re: Series and Progressions

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

#692 2016-08-18 23:33:29

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#319 (two parts) is correct. Good work, bobbym!

SP#320. Find the sum of 22 terms of an Arithmetic Progression in which d = 7 and 22nd term is 149.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#693 2016-08-19 03:26:37

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

Re: Series and Progressions

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

#694 2016-08-19 17:42:32

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#320 is correct. Neat work, bobbym!

SP#321. Find the sum of first 51 terms of an Arithmetic Progression whose second and third terms are 14 and 18 respectively.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#695 2016-08-19 23:00:30

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

Re: Series and Progressions

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

#696 2017-03-16 16:28:45

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#321 is correct. Splendid, bobbym!

SP#322. The first and the last terms of an Arithmetic Progression are 7 and 49 respectively. If the sum of all its terms is 420, find its common difference.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

Offline

#697 2017-03-16 18:54:26

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

Re: Series and Progressions

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

#698 2017-03-16 23:30:09

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solution SP#322 is correct. Good work, bobbym!

SP#323. Write the 5th term from the end of the A.P. 3,5,7,9, .....,201.

SP#324. Write the value of x for which 2x, x + 10 and 3x + 2 are in A.P.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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#699 2017-03-17 14:22:30

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

Re: Series and Progressions

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

#700 2017-03-17 17:04:20

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,054

Re: Series and Progressions

Hi;

The solutions SP#323 and SP#324 are correct. Good work, bobbym!

SP#325. If 7th and 13th terms of an A.P. be 34 and 64 respectively, then its 18th term is ________.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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

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