Question

Q. 3) What is the average of cubes of first five even numbers?
Plz tell STEP BY STEP ​

Answer 1

We know that sum of cubes of first n natural numbers is = (n(n+1)/2)2

Step-by-step explanation:

As we know first 5 even numbers is

2,4,6,8,10

Cube of these is

8,64,216,512,1000

hence average of them =

8+64+216+512+1000/5

= 1800/5

=360

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