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Mathematics 13 Online
OpenStudy (anonymous):

What is the units digit of 8 to the 97th? (no using a calculator) LAST ONE

OpenStudy (anonymous):

@iGreen

OpenStudy (anonymous):

@iGreen I really need help please I got 4:24 left please come and help

OpenStudy (anonymous):

@GreenCat @yolo_king335

OpenStudy (anonymous):

@ElonaSushchik

OpenStudy (anonymous):

@TuringTest

OpenStudy (greencat):

google it; there's a simple trick i gotta study

OpenStudy (anonymous):

it isn't on google I already checked

OpenStudy (anonymous):

too late test timed out I got an 80

OpenStudy (greencat):

Write the unit digit of each until it repeats 8^1: 8 8^2: 4 8^3: 2 8^4: 6 8^5: 8

OpenStudy (greencat):

It repreats by every 4

OpenStudy (greencat):

subtract 97 by the largest multiple of 4 smaller than it

OpenStudy (anonymous):

thx tho @GreenCat

OpenStudy (anonymous):

but it already is submitted

OpenStudy (greencat):

ok 97-96=1 so that means it would be one more after the 4 which goes to 1 so 8^1: 8 ans is 8 sorry so late

OpenStudy (greencat):

bye

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