Question

4 digit numbers to be formed out of the figures 0, 1, 2, 3, 4 (no digit is repeated) then

number of such numbers is​

Answer 1

56789

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Answer 2

s={10,20,30,40,12,13,14,21,23,23,31,32,34,41,42,43}

n(S)=15

hence number of 4 digit numbers to be formed out of the figures 0, 1, 2, 3, 4 (no digit is repeated) is 15.

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