In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate.
In how many ways 2 directors and 3 executives can be arranged for a meeting? If there are 6 chairs available two on one side and remaining four on the other side of the table and the two directors has to be together on one side and the executives on the other side.
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A lady arranges a dinner party for 6 guests .The number of ways in which they may be selected from among 10 friends if 2 of the friends will not attend the party together is
Number of signals that can be made using 2 flags out of given 4 flags.
5 singers are to be given performance in a concert. How many ways can they be arranged in a order
209 videos443 docs143 tests

209 videos443 docs143 tests
