Question

An arithmetic sequence has first term 13 and common difference 6. Find the 25th term

of the sequence.

Answer 1

a₂₅ = 157

Explanation:

the nth term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 13 and d = 6 , then

a₂₅ = 13 + (24 × 6) = 13 + 144 = 157