Question

TheFirst term of an AP is common different=3 and the last term=80 Find the number term​

Answer 1

Answer:

a= 5

d = 3

a of n = 80

according to question :-

80= a+(n-1)d

80 = 5 + (n-1)3

80= 5+3n-3

80=2+ 3n

78 = 3n

n = 78/3

   = 26

therefore number of terms is 26