Question

18. Which term of an AP 4,9, 14............ is 84?​

Answer 1

Answer:17 the term is 84

Step-by-step explanation:

Tn=a+(n-1)d

A=4

d=5

Tn=84

Answer 2

Step-by-step explanation:

a =4

d=5

a+(n-1) d = 84

4+ (n-1) 5 = 84

5 n-5=84-4

5 n = 85

n=85/5 = I7

Therefore 17th term of AP is 84