How many numbers lying between 100 and 1000 can be formed with the | Filo
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Class 11

Math

Algebra

Permutations and Combinations

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How many numbers lying between and can be formed with the digits if the repetition of digits is not allowed -

Correct Answer: Option(b)
Solution:
Solution :-
number lying between 100 and 1000
formed by 3 digits.
and every digit have 5 option (1,2,3,4,5)
to select a number
But repetion is not allowed
so number =
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