Quantitative Aptitude Ques 482

Question: If the square a number is subtracted from the cube of that number, the result in 48. Then, the number is

Options:

A) 8

B) 5

C) 6

D) 4

Show Answer

Answer:

Correct Answer: D

Solution:

  • Let the number be x, According to the question, $ x^{3}-x^{2}=48 $

$ \Rightarrow $ $ x^{2}(x-1)=4^{2}(4-1) $

$ \Rightarrow $ $ x=4 $