CUET Preparation Today
CUET
General Test
Numerical Ability
Average
Out of 5 numbers, the sum of the first 4 numbers is 10 times the 5th number. If their average is 121 then the 5th number is?
55
76
64
45
Let 5th number = x
Sum of 4 numbers = 10x
\(\frac{10x + x}{5}\) = 121
11 x = 121 × 5
x = 55