Question

The average of 5 numbers is 18. If one number is excluded, then their average becomes 16. The excluded number is:

• A. 33
• B. 26
• C. 16
• D. 34

Answer 1

The correct option is B 26

Average of 5 numbers=18
$\therefore Total=18\times 5=90$
By excluding one number, the average of remaining 4 numbers =16
$\therefore Total=16\times 4=64$
$\therefore$ Excluded number = 90 - 64 = 26