how many numbers between 100 and 1000 can be formed with the digit 3,4,5,6,7,0.
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Between 100 and 1000 all are three digit natural numbers.
The hundred place can be filled by any of the digits 3,4,5,6,7 in 5 ways.
The tens place can be filled by any of the digits 0, 3,4,5,6,7 in 6 ways.
The ones place can be filled by any of the digits 0, 3,4,5,6,7 in 6 ways.
By Fundamental Principal OF counting, the total number between 100 and 1000 can be formed with the digit 3,4,5,6,7,0. = 5 × 6 × 6 = 180 ways.
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