SOLUTION: Two-digit numbers are be made up the digits 2, 3, and 4. How many such numbers can be made if repetition of digits is allowed?

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Question 526262: Two-digit numbers are be made up the digits 2, 3, and 4. How many such numbers can be made if repetition of digits is allowed?
Answer by solver91311(24713) About Me  (Show Source):
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Each of the three choices for the 10s digit has three possible choices for the 1s digit. 3 times 3.

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