What is the smallest positive integer x such that 507+x is the cube of a positive integer? Choices:
A) 15  B) 5  C) 50  D) 2  E) 4
Given 507+x is a perfect cube   so we will take 512 = 8*8*8   507+x = 512   x = 512-507= 
<gadget id="calculator">512-507</gadget>
<output>5</output>
5   correct option is 5
<result>B</result>
What is the smallest positive integer x such that 507+x is the cube of a positive integer?