Given that 220 + 1 is completely divisible by a whole number, which of the following is completely divisible by the same number?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e 260 + 1.
| Understanding/Application |
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Let 220 + 1 is completely divisible by the whole number x. 220 + 1 = kx (where k is constant) |
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(220)3 + 13 = (220 + 1) (240 + 220 + 1) 260 + 1 = kx (240 + 220 + 1) 260 + 1 is completely divisible by whole number x. |