Question

Find the twenty fifth term in the sequence for which a1= -6.2 and d=2.5

Answer 1

53.8

Explanation:

nth term of an AP is given as:

`t_n= a+(n-1)d \\ \therefore \: t_(25)= - 6.2+(25-1) * 2.5 \\ \therefore \: t_(25)= - 6.2+24* 2.5 \\ \therefore \: t_(25)= - 6.2 + 60 \\ \huge \red{ \boxed{\therefore \: t_(25)= 53.8}}`