EasyBrain TeasersAcceptance 60%
Last Digit of 2^100
Goldman SachsMorgan Stanley
What is the last (units) digit of 2^100?
Approach
List the last digits of 2, 4, 8, 16, 32, … and find the cycle.
Answer
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The answer is 6. Sign in free for the full worked solution and to check your own answer.
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