The average of 7 consecutive odd natural numbers is 21. Which is the smallest number out of these 7 numbers?
Show answer & explanation
Correct answer: A
Explanation
Given:
Average of 7 consecutive odd numbers = 21
According to the formula:
Average of consecutive numbers = Middle number
Middle number = 21
The numbers:
15, 17, 19, 21, 23, 25, 27
Smallest number = 15