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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

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

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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.

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

.

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

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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?

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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.

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

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?

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

SP#596. The first term of an Arithmetic Progression is 10, the twentieth term 60. Calculate the sum of first 20 terms.

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

The solution is correct. Keep it up!

SP#597. The angle of a 36 sided polygon forms an Arithmetic Progression with common difference 1. What is the smallest angle?

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

SP#598. The angles of a quadrilateral are in Arithmetic Progression. The largest angle is 150°. Find the other angles.

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

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**666 bro****Member**- From: Flatland
- Registered: 2019-04-26
- Posts: 245

SP#598. The angles are 30°, 70° and 110° respectively

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

Neat work! The solution SP#598 is correct!

SP#599. Find the sum: 34 + 32 + 30 + .... + 10.

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

Neat work! The solution SP#599 is correct!

SP#600. Which term of the Arithmetic Progression : 121, 117, 113, ..... is its first negative term?

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

The solution SP#600 is correct. Excellent!

SP#601. For what value on n are the nth terms of two Arithmetic Progressions : 63, 65, 67, .... and 3, 10, 17, .... equal?

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

SP#602. Ruby saved $5 in the first week become and then increased her weekly savings by $1.75. If in the nth week, her weekly savings become $20.75, find n.

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

SP#603. Two Arithmetic Progressions have the same common difference. The difference between their 100th terms is 100, what is the difference between their 1000th terms?

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,594

Hi,

SP#604. Find the sum of the odd numbers between 0 and 50.

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

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