Question

Check whether- 150 is the term of the AP 11,8,5,2​

Answer 1

$n = a_{1} + (n - 1)d \\ - 150 = 11 + (n - 1)3 \\ - 150 = 11 + 3n - 3 \\ - 150 = 8 + 3n \\ - 3n = 158 \\ n = - 52 \frac{2}{3}$

Therefore it's not