Question

What is the sum of the digits of the minimum number that should be added to 24000 to make a perfect cube?
1. 22
2. 1
3. 3
4. 20

Answer 1

Correct Answer - Option 4 : 20

Given:

The number = 24000

Concept:

28³ = 21952

29 = 24389

Calculation:

⇒ The cube of 24000 is near the cube of 28, and 29

⇒ The cube of 28 = 21952

⇒ The cube of 29 = 24389

⇒ Now, we have added a number to 24000 then,

⇒ The required number = 24389 - 24000 = 389

⇒ The sum of the digit of the number = 3 + 8 + 9 = 20

∴ The required result will be 20.