Asked by mm

all the nubers from 1 to 99 are multiplied together. Use a pattern to determine the last digit of the product. Justify your answer.
Answered by mm
all the mumbers from 1 to 99
Answered by Reiny
clearly the last digit has to be a zero.
(actually the last few digits will be zeros, since factors like 2x5 or 10 or 20 etc all will produce an extra zero in the product)
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