Question

If the sum of n consecutive odd numbers starting from 21 is equal to 125, then the value of n is

Answer 1

Answer:

The correct answer will be 9.

Step-by-step explanation:

Let one number be x.

Then, the other number will be x+2.

The third number = x+2+2=x+4

It is given that their sum is 21.

So, x+(x+2)+(x+4)=21

3x+6=21

3x=15

x=5

and x+2=7

x+4=9.