Q. The average of all the numbers between 6 and 50 which are divisible by 5 is :
Answer:
27.5
Notes: Required numbers are : 10, 15, 20, 25, 30, 35, 40, 45.
Total Sum of these numbers is 220.
$ Now,\ Average = \frac{220}{8} = 27.5$
Hence option [B] is correct answer.