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Q: How many four digit numbers can be formed using 3 only once but 3 must be used in all such numbers?
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What is the number of four digit numbers which can be formed using four of the digits 0 1 2 3 and 4 without repetition?

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How many 2 digit number can be formed using number 0 2 and 3?

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How many four digit numbers can be formed using all digits if same digit on four place is not allowed example 5555 is not allowed?

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How many four digit numbers can be formed out of 123 if a digit can be repeated?

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How many 4-digit numbers can be formed by the digits 01 2 3 456789 using the digits more than once in each number example 1112 1122?

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How many four-digit numbers can be formed if the leading digit cannot be zero?

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How many different four-digit numbers can be formed from the digits 0 through 9?

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