Find the number of positive integers less than 100,000 whose digits are among 1, 2, 3, and 4.
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Mathematics, 19.05.2020 02:05 danitamontecalvo
Find the number of positive integers less than 100,000 whose digits are among 1, 2, 3, and 4.
Hint: consider the possibilities for 5-digit, 4-digit, 3-digit, 2-digit, and 1-digit numbers and repetition of digits.
Answers: 2
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