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#1051 2019-08-02 16:21:58

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

.

The solution SP#587 is correct. Neat work, Monox D. I-Fly!

SP#588. Find the sum of n terms of the following sequence: 3, 8, 13, 18, ....


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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#1052 2019-08-02 18:59:07

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,936

Re: Series and Progressions


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

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#1053 2019-08-02 23:24:35

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

.

The solution SP#587 is correct. Neat work, Monox D. I-Fly!

SP#588. Write the algebra of 10, 18, 26, .... Calculate the sum of first 30 terms.


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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#1054 2019-08-31 16:45:16

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

.

SP#589. The eighth term of an Arithmetic Progression is 40. Calculate the sum of first 15 terms.


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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#1055 2019-11-01 23:03:51

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

SP#590. Find the sum of first 20 natural numbers. How much more is the sum of first 40 natural numbers than this?


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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#1056 2019-11-03 14:25:32

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,936

Re: Series and Progressions


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

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#1057 2019-11-04 00:09:10

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi Monox D. I-Fly,

.

The former part of the solution is correct. Neat work!

SP#591. The sum of first 21 terms of an Arithmetic Progression is 630. Find its eleventh term.


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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#1058 2019-12-01 00:55:04

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

.

SP#592. 21 is the middle term of an arithmetic sequence. How many terms are there in this sequence?


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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#1059 2019-12-02 21:09:58

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

SP#593. The 5th term of an Arithmetic Progression is 40 and the 10th term is 20. Find the 15th term. How many terms of this Arithmetic Progression makes the sum 0?


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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#1060 2019-12-03 14:33:43

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,936

Re: Series and Progressions


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

Offline

#1061 2019-12-03 16:18:30

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

Neat work!

SP#594. The angles of a polygon are in Arithmetic Progression. The smallest angle is 120°, and common difference 5°. Find the number of sides.


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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#1062 Yesterday 03:20:31

ganesh
Administrator
Registered: 2005-06-28
Posts: 29,227

Re: Series and Progressions

Hi,

SP#595. The angles of a nine sided polygon are in an Arithmetic Progression. Which degree measure is always a term of this sequence?


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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