Question 1059248: How many 3-digit numbers that are evenly divisible by 5 can be formed using the numbers 1,2,4,5, 6 and 9 if repetition is NOT allowed?
Answer by ikleyn(52810)   (Show Source):
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How many 3-digit numbers that are evenly divisible by 5 can be formed using the numbers 1,2,4,5, 6 and 9 if repetition is NOT allowed?
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5*4 = 20.
The "ones" digit is 5.
The first digit can be any of five digits 1, 2, 4, 6 and 9 (5 options).
The second digit (tens) can be any of four remaining digits (4 options).
Therefore, the answer is 5*4 = 20.
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