MBA
Exam
Remainder when 54^124 divided by 17 ? 1) 4 2) 1 3) 3 4) 0
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- Good job pulling off the powers of 51!
3^124 = (3^7)^17 · 3^5
(3^7)^17 will leave the same remainder when divided by 17 as 3^7, so we can address 3^7 · 3^5 = 3^12
And since 3^12 has remainder 4 when divided by 17, so will 3^124.
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