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Question

How many five digit numbers can be formed by using the digits 1,2,3,4,5 without repetition of digits?

A
120
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B
240
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C
150
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D
160
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Solution

The correct option is A 120
1,2,3,4,5
Number of given digits =5
Number of Digited number to be formed =5
Number of such numbers
5P5=5!0!=5!=120
Number of such numbers =120

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