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find the number of distinct positive integers that can be formed using 0,1,2,3 where each integer is used at the most once.

find the number of distinct positive integers that can be formed using 0,1,2,3 where each integer is used at the most once.

Grade:11

1 Answers

arpit burad
16 Points
10 years ago

1 digit integer=4

2 digit integer=4p2-3p1=9

3 digit integer=4p3-3p2=18

4 digit integer=4p4-3p3=18

adding these we get 49 which is the answer

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