Question

Find the average of all positive integers less than 500 which is divisible by both 3 and 5

Answer 1

Answer:

255

Step-by-step explanation:

No divisible by both 3 and 5

is divisible by 15

so no are

15,30..........495

This is an AP and here a=15,d=15 ,l=495

So average of no=AM

=(a+l)/2

=(15+495)/2

=510/2

=255