2014 · Q36
7¹⁰ − 5¹⁰ is divisible by
Elementary MathematicsNumber System
- A10
- B7
- C5
- D11
Explanation
7¹⁰ − 5¹⁰ = (7⁵ − 5⁵)(7⁵ + 5⁵); 7⁵ + 5⁵ = 16807 + 3125 = 19932 = 11 × 1812.
7¹⁰ − 5¹⁰ is divisible by
Explanation
7¹⁰ − 5¹⁰ = (7⁵ − 5⁵)(7⁵ + 5⁵); 7⁵ + 5⁵ = 16807 + 3125 = 19932 = 11 × 1812.