Question

If the n^th  term of the AP is 7n – 9, then the first term is ________

(a) 1

(b) 6

(c) 3

(d) 4

The question was asked in quiz.

This interesting question is from Nth Term of Arithmetic Progression topic in portion Arithmetic Progressions of Mathematics – Class 10

Answer 1

Right choice is (b) 6

To explain: n^th term of the AP is 7n – 9

Tn = 7n – 1

T1 = 7(1) – 1 = 6

The first term of AP is 6.