The remainder when 8^12 − 2 is divided by 7

[HoldMyBeer]

The remainder when 8^12 − 2 is divided by 7

I will do it by unit digit method here 8 got 2 unit digit 8 & 6 12 / 2 = 6 so 8^12 gives 6 as unit digit . …6 -2 now divide by 7

https://forums.gregmat.com/t/quant-question-doubt-from-gregmat-prob-solving/7587/2