Class 11MathematicsPermutation and CombinationDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyHow many $3$-digit numbers can be formed from the digits $1, 2, 3, 4,$ and $5$ assuming that repetition of the digits is allowed?
- A$125$
- B$60$
- C$243$
- D$120$
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The number of $3$ digit odd numbers that can be formed by using the digits $1, 2, 3, 4, 5, 6$ when the repetition of digits is allowed is:
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In how many ways can $8$ people stand in a line such that there are always exactly two people between two specific people $A$ and $B$?
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