Class 11MathematicsPermutation and CombinationDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyGiven $4$ flags of different colours,how many different signals can be generated,if a signal requires the use of $2$ flags one below the other?
- A$12$
- B$16$
- C$8$
- D$24$
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Similar Questions
The number of $7$ digit numbers which can be formed using the digits $1, 2, 3, 2, 3, 3, 4$ is
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View SolutionThe 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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View SolutionHow many numbers greater than $10$ lakh can be formed using the digits $2, 3, 0, 3, 4, 2, 3$?
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View SolutionThe number of integers between $2,000$ and $5,000$ that can be formed using the digits $0, 1, 2, 3, 4$ (repetition of digits is not allowed) such that the number is a multiple of $3$ is:
DifficultJEE MAIN 2018
View SolutionThe number of different $9$-digit numbers that can be formed by rearranging the digits of the number $445577888$ such that the odd digits occupy even positions is:
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