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- Please,please help me Total number of four digit odd numbers that can be formed using 0, 1, 2, 3, 5, 7 are
Total number of four digit odd numbers that can be formed using 0, 1, 2, 3, 5, 7 are
- Option 1)
216
- Option 2)
375
- Option 3)
400
- Option 4)
720
Answers (1)
As we learnt in
Number of Permutations with repetition -
The number of ways of filling r places where each place can be filled by any one of n objects.
It is
- wherein
Where
Number of Permutations without repetition -
Arrange n objects taken r at a time equivalent to filling r places from n things.
- wherein
Where
We have 0, 1, 2, 3, 5, 7 and Repetition is allowed.
Correct option is 4.
Option 1)
216
This is an incorrect option.
Option 2)
375
This is an incorrect option.
Option 3)
400
This is an incorrect option.
Option 4)
720
This is the correct option.
View full answer
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