Question

A container contains 990 liters of oil. How much more oil should be added so that the volume of the oil is the smallest 4-digit perfect square number?
1. 124 liters 
2. 104 liters 
3. 166 litres
4. 130 liters 

Answer 1

Correct Answer - Option 3 : 166 litres

Given:

A container contains oil = 990 litres

Calculation:

According to the given option

⇒ (990 + 124) = 1114

It is not the 4-digit perfect square number

⇒ (990 + 104) = 1094

It is not the 4-digit perfect square number 

⇒ (990 + 166) = 1156

It is the 4-digit perfect square number of 34

⇒ (990 + 130) = 1120

It is not the 4-digit perfect square number

∴ The smallest 4-digit perfect square number is 166 litres