Question

- 3 , - 5 , -7,…….. Find the n th term of the series.

Answer 1

Answer:

$a{first \: term} = - 3 \\ d{common \: difference} = - 5 + ( - 3) \\ \\ = d = - 7 \\ an = a + (n - 1)d \\ \\ = - 3 + (n - 1) - 7 \\ \\ = - 3 - 7n + 7 \\ \\ = - 7n + 4$

therefore it's nth term is -7n + 4....✌️