Question

. Which term of the AP:3, 8, 13, 18,...is 78?​

Answer 1

Answer:

16th term

Step-by-step explanation:

a=3

d=5

an=78

n=?

an=a+(n-1)d

78= 3+(n-1)5

78-3=5(n-1)

n-1= 75/5

n-1=15

n=16

Answer 2

Answer:

23,28,33,38,43,48,53,58,63,68,73,