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Problem Solving (PS) | Re: 12 Days of Christmas GMAT Competition - Day 2: What is the last digit

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Bunuel wrote:

12 Days of Christmas GMAT Competition with Lots ofFun

What is the last digit in the expanded value of\( 2^{394} –6^{88}\)?

A.2
B.4
C.6
D.8
E.0















 



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To figure out the units digit of this expression all we need to do is subtract the units digit of each separate expression.

We know the 6 raised to any number will have a units digit of 6. So we just need to figure out the units digit of\(2^{394}\)

Possible units digit of[m]
...

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