Question Detail

MTH 101 MTH 101 Past Questions Objective Question

Question

If 2^4 ≡ 1 (mod k), find k
Options
A 15
Correct Answer
B 5
C 3
D 7
Correct Answer

Option A is the correct answer.

Detailed Explanation

2^4 = 16 ≡ 1 (mod 15), so k = 15.

Hint

Find k such that 16 − 1 is divisible by k.

Question Info