What is the smallest positive integer x such that 520-x is the cube of a positive integer
Choose the most appropriate option:
A) 5	B) 7	C) 8	D) 9	E) 12
Given 520-x is a perfect cube   so we will take 512= 8*8*8   520-x = 512   x =520-512= 
<gadget id="calculator">520-512</gadget>
<output>8</output>
8   correct option is 8
<result>C</result>
What is the smallest positive integer x such that 520-x is the cube of a positive integer