Question

Which term of ap:3, 8,13,18,....is78?

Answer 1

Answer:

16

Step-by-step explanation:

3, 8,13,18,...

first term=3

common difference=8-3=5

nth term of an A.P=a+(n-1)d

78=3+(n-1)5

78-3=(n-1)5

75/5=n-1

15=n-1

n=16