Question

The average of eight successive numbers is 6.5. The average of the smallest and the greatest numbers among them will be :

Answer 1

Answer:

6.5

Step-by-step explanation:

Let 8 consecutive numbers be x, x+1, x+2..............x+7

now, ATQ

x+x+1+.........x+7 = 6.5×8

8x+1+2....+7= 52

8x+28 = 52

x= 24/8= 3

then first number = 3 and last number = 3+7= 10

then average of 1st and last number =  (3+10)/2= 6.5.