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The number of different four digit numbers that can be formed with the digits 2, 3, 4, 7 and using each digit only once is
A. 120
B. 96
C. 24
D. 100

Answers (1)

The answer is the option (c)

We have to form 4-digit numbers using 2,3,4 and 7. 

Required number of ways = ^4P_4=4!=24

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