Question

Find the number of terms in the A.P. 3, 6, 9, 12 , ….., 108.​

Answer 1

Answer:

36

Step-by-step explanation:

An= a+(n-1)d

108= 3+(n-1)3

105= (n-1)3

35= n-1

n= 36

Answer 2

a = 3
d = + 3
an = l = 108

an = a + (n-1) d
108 = 3 + (n-1) 3
105 = 3n - 3
3n = 108
n = 36

Thus, the AP has 36 terms :)