alleryStart learning →Using digits 1, 2, 3 at most once each, how many two-digit dates of a 31-day month can be made?
A3
B6
C4
D5
Answer & Solution
Correct answer: D. 5
The numbers 12, 13, 21, 23, 31 and 32 can be formed, but 32 is not a date, leaving 5.
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