Question

Which term of the AP 3,8,13,18_____78?
(1 mark question)

Answer 1

HEY MATE

Answer is

71

                   

Answer 2

Answer:

Step-by-step explanation:

Let the n-th term of the A.P. be 78

Here first term=a=3

Common difference=d=8-3=5

So 3+(n-1)×5=78

3+5n-5=78

=> 5n-2=78

=> 5n78+2=80

=> n=80/5=16

Thus, the 16th term of the A.P. is 78.(answer)