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- Answer please! The number of integers greater than 6,000 that can be formed, using the digits 3, 5, 6,7 and 8, without repetition, is :
The number of integers greater than 6,000 that can be formed, using the digits 3, 5, 6,7 and 8, without repetition, is :
- Option 1)
216
- Option 2)
192
- Option 3)
120
- Option 4)
72
Answers (1)
As we learnt in
Number of Permutations without repetition -
Arrange n objects taken r at a time equivalent to filling r places from n things.
- wherein
Where
Four digit numbers can be
Five digit numbers
Total = 192
Correct option is 2.
Option 1)
216
This is an incorrect option.
Option 2)
192
This is the correct option.
Option 3)
120
This is an incorrect option.
Option 4)
72
This is an incorrect option.
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