The number of five-digit number that can be formed with the digits 0,1,2,3 and 4 if the digits can be repeated in the same number is
A
25
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B
250
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C
2500
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D
12500
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Solution
The correct option is C2500 Digits are 0,1,2,3,4, total number of Digits =5
We know that as 0 cannot be placed in the thousandth place, thus the number of ways to fill up the ten thousandth place from the remaining 4 digits=4
We also know that as the numbers can be repeated thus the number of ways to fill up each of the other 4 places (thousandth, hundredth, tenth and ones places) =5
So the total number of ways to form a 5-digit number =4×5×5×5×5=2500