What is the average of all three-digit numbers divisible by 22?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 550.
Smallest three-digit numbers divisible by 22 = 110
Largest three-digit numbers divisible by 22 = 990
Number of terms = [(Last - First)/Common difference] + 1
= (990 - 110)/22 + 1
= 880/22 + 1
= 40 + 1
= 41
Average = (First + Last)/2 = (110 + 990)/2 = 1100/2 = 550