Asked by Kale
If the tens digit d is replaced with one of the digits 0-9, what is the probability that the four-digit positive integer 12d4 is divisible by 12? Express as a common fraction.
Answers
Answered by
bobpursley
to be divisible by 12, d has to be 2 or 7
Pr=2/10= ?
Pr=2/10= ?
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