Class 11MathematicsPermutation and CombinationDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyThe number of ways in which $5$ boys and $3$ girls can be seated in a row so that each girl is between two boys.
- A$2880$
- B$1880$
- C$3800$
- D$2800$
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Similar Questions
$A$ three-digit number $n$ is such that the last two digits are equal and differ from the first digit. The number of such $n$'s is:
If the letters of the word "$CAPITAL$" are permuted in all possible ways and the words are arranged in a dictionary order,then the rank of the word "$CAPITAL$" is
How many numbers can be formed using the digits $0, 1, 2, 3, 4, 5$ that are greater than $3000$ (repetition is not allowed)?
MediumIIT 1976
View SolutionThe number of four-letter words that can be formed with letters $a, b, c$ such that all three letters occur is
DifficultKVPY 2019
View SolutionIf all the letters of the word $REPEAT$ are permuted in all possible ways and if the six-letter permutations thus formed are arranged in the dictionary order,then the rank of the word $REPEAT$ is:
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