SOLUTION: how many even numbers of four digits number can be formed from the digits 1,2,3,4,
5 if repitition is permitted
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-> SOLUTION: how many even numbers of four digits number can be formed from the digits 1,2,3,4,
5 if repitition is permitted
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how many even numbers of four digits number can be formed from the digits 1,2,3,4,
5 if repetition is permitted ?
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= 2*625 = 1250.
Last digits: 2 or 4 only (2 options)
5 options for digits in every position from 1 to 4 counting from the left: options.
Therefore, the result is .
