Question

What is the tenth term in the sequence 1 3 5 7

Answer 1

10th term = 19

Explanation:

Given is an arithmetic sequence. Each term of the arithmetic is obtained by adding 2 to the previous term.

n = 10

common difference = d = second term - first term

= 3 - 1

d = 2

a = First term = 1

`\boxed{T_n = a+ (n-1)d}`

`\sf T_(10)= 1 + (10 -1)*2`

= 1 + 9 * 2

= 1 + 18

= 19