Arithmetic progression ↑↑↑↑

Find the sum of all the 11 terms of an AP whose middle most term is 30.

Arithmetic progression

Find the sum of first 17 terms of an AP whose 4th and 9th terms are –15 and –30 respectively.

Arithmetic Progression

If S_n denotes the sum of first n terms of an AP, prove that

S₁₂ = 3(S₈ –S₄)

Arithmetic Progression

In an AP, if Sn = 3n² + 5n and a_k = 164, find the value of k.

 

Arithmetic progression

Find the sum of the following series up to 11 terms

 

Arithmetic Progession

The first term of an AP is –5 and the last term is 45. If the sum of the terms of the AP is 120, then find the number of terms and the common difference.

Arithmetic Progression

Split 207 into three parts such that these are in AP and the product of the two smaller parts is 4623.

Arithmetic Progression

The angles of a triangle are in AP. The greatest angle is twice the least. Find all the angles of the triangle.

Arithmetic progression

Which term of the AP: 53, 48, 43,... is the first negative term?

Arithmetic progression ↑↑↑↑

How many numbers lie between 10 and 300, which when divided by 4 leave a remainder 3?

Arithmetic Progression

Justify whether it is true to say that the following are the n^th terms of an AP. 1+n+n²

CBSE Guess paper 2014

ICSE mock test paper 2014

CBSE Guess Paper 2014

Arithmetic progression

Determine k so that k²+ 4k + 8, 2k² + 3k + 6, 3k² + 4k + 4 are three consecutive terms of an AP.

Arithmetic progression

Find a, b and c such that the following numbers are in AP: a, 7, b, 23, c.

Arithmetic progression

If the 9^th term of an AP is zero, prove that its 29th term is twice its 19th term.

Arithmetic progression

Find the 20^th term of an AP whose 7^th term is 24 less than the 11^th term, first term being 12.

arithmetic progression

The sum of the 5th and the 7th terms of an AP is 52 and the 10th term is 46. Find the AP.

10 coordinate geometry

The equation of a line is 2y – 3x = 5. A mirror is placed at x = 6.

Find the equation of line of the mirror image.