Mathematics Practice Test – Sequence and Series (Questions With Answers and Explanations)

In an A.P, the difference between the 8^th and the 4^th term is 20 and the 8^th term is 1  times the 4^th term. What is the 1^st term of the sequence?

A. 25      B. 10      C. 5      D. 3

The first three terms of an A.P. are x, (3x + 1) and (7x - 4). Find the common difference.

A. 7      B. 6      C. 5      D. 4

What is the 25^th term of 5, 9, 13,…….? 

A. 96      B. 100      C. 101      D. 120

The sum of 12 and one third of n is 1 more than twice n. Express the statement in the form of an equation.

A. 12n – 6 = 0        B. 3n – 12 = 0        C. 2n – 35 = 0        D. 5n – 33 = 0

An A.P. has 3 has 102 as the first and last term respectively. Find the common difference, d.

A. 28      B. 14        C. 14      D. 420