What is the smallest positive integer x such that 280-x is the cube of a positive integer  Answers:  A) 5  B) 64  C) 62  D) 60  E) 12
Given 280-x is a perfect cube   so we will take 216= 6*6*6   280-x = 216   x =280-216= 
<gadget id="calculator">280-216</gadget>
<output>64</output>
64   correct option is 64
<result>B</result>
What is the smallest positive integer x such that 280-x is the cube of a positive integer