English Medium Class 10 - CBSE Question Bank Solutions for Mathematics

Find the sum of the following APs:

2, 7, 12, ..., to 10 terms.

Find the sum of the following APs:

–37, –33, –29, ... to 12 terms.

Find the sum of the following APs:

0.6, 1.7, 2.8, ... to 100 terms. 

Find the sum of the following APs:

`1/15, 1/12, 1/10`, ... to 11 terms.

Find the sum given below:

`7 + 10 1/2 + 14 + ... + 84`

Find the sum given below:

34 + 32 + 30 + ... + 10

Find the sum given below:

–5 + (–8) + (–11) + ... + (–230)

In an AP: Given a = 5, d = 3, a_n = 50, find n and S_n.

In an AP, given a = 7, a₁₃ = 35, find d and S₁₃.

 In an AP Given a₁₂ = 37, d = 3, find a and S₁₂.

In an AP given a₃ = 15, S₁₀ = 125, find d and a₁₀.

In an AP given d = 5, S₉ = 75, find a and a₉.

In an AP, given a = 2, d = 8, and S_n = 90, find n and a_n.

In an AP given a = 8, a_n = 62, S_n = 210, find n and d.

In an AP given a_n = 4, d = 2, S_n = −14, find n and a.

 In an AP given a = 3, n = 8, S_n = 192, find d.

In an AP given l = 28, S = 144, and there are total 9 terms. Find a.

How many terms of the AP. 9, 17, 25 … must be taken to give a sum of 636?

The first term of an A.P. is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

The first and last terms of an AP are 17 and 350, respectively. If the common difference is 9, how many terms are there, and what is their sum?