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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.
```

6 years ago

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### Answers : (1)

```										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
```
6 years ago

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