Question

Find the number of term of finite a.p 7,11,15....103​

Answer 1

Answer:

no. of term = 25

Step-by-step explanation:

first term , a = 7

last term , l = 103

common difference , d = 11 -7 = 15 - 11 = 4

let the number of term  is 'n'

∴ l = a + (n-1)d

103 = 7 + (n-1)4

103 = 7 + 4n - 4

103 -3 = 4n

n = 100/4 = 25