Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

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

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

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

**math9maniac****Member**- From: Tema
- Registered: 2015-03-30
- Posts: 419

Only a friend tells you your face is dirty.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym, zetafunc, and math9maniac,

The solution SP # 37 is correct! Good work, bobbym, zetafunc, and math9maniac!

SP # 38. Find the common difference and write the next four terms of each of the following Arithmetic Progression

(i) 1, -2, -5, -8...

(ii) 0, -3, -6, -9.....

.

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

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi zetafunc and bobbym,

The solution SP # 38 (all four parts) are correct! Marvelous, zetafunc and bobbym!

SP # 39. A manufacturer of television sets produced 600 units in the third year and 700 units in the seventh year. Assuming that the production increases uniformly by a fixed number every year, find the production in

(i) the first year

(ii) the 10th year

(iii) 7 years.

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

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi zetafunc and bobbym,

The solution SP # 39 is 66.67 % correct, zetafunc! Good work!

SP # 40. The sum of 'n' terms of an Arithmetic Progression is

. If its 'm'th term is 168, find the value of 'm'. Also, thn the 20th term of this Arithmetic Progression.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

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym,

The solution SP # 40 (both parts) is correct! Excellent, bobbym!

SP # 41. Find the sum of first 20 terms of an Arithmetic Progression in which the third term is 7 and seventh term is two more than thrice of its 3rd term.

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

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym,

The solution SP # 41 is correct! Smart work!

SP # 42. The angles of a quadrilateral are in an Arithmetic Progression whose common difference is 10 degrees. Find the angles.

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

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym,

The solution SP # 42 is correct! Perfect!

SP # 43. Find the sum :

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

Offline

**math9maniac****Member**- From: Tema
- Registered: 2015-03-30
- Posts: 419

*Last edited by math9maniac (2015-09-21 01:27:38)*

Only a friend tells you your face is dirty.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi math9maniac,

The solution SP # 43 is correct! Excellent!

SP # 44. Find the sum of 'n' terms of Arithmetic Progression whose nth term is given by

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

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym,

SP # 45. Find the value of 'x' for which (8x + 4), (6x - 2), and (2x + 7) are in an Arithmetic Progression.

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

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

Hi bobbym,

The solution SP # 45 is correct! Good work!

SP # 46, Find the common difference of the following Arithmetic Progression, amd write the next two terms:

(i} 51, 59, 67, 75. ...

(ii) 1.8, 2.0, 2.2, 2.4, ....

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

Offline

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

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

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 27,831

hi bobbym,

The solution SP # 46 (both parts) are correct! Meticulous!

SP # 47. Find the sum of all integers between 84 and 719, which are multiples of 5.

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

Offline

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

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