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Asked 6 months ago
question of the day
Find the number of different ways this can be done if one boy and one girl are twins and must be in the same group.
7 children have to be divided into two groups, one of 4 children and the other of 3 children. Given that there are 3 girls and 4 boys, find the number of different ways this can be done if one boy and one girl are twins and must be in the same group.
Asked 4 months ago
A ball is dropped from a height of 3 m and bounces on the ground.At the top of each bounce, the ball reaches 60% of its previous height.Calculate the total distance travelled by the ball when it hit the grounds for the fifth time.Can someone show how to answer this question step by step? Quite urgent :(