A bag contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the bag, if at least one black ball is to be included in the draw
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Ques. A box contains 4 red, 3 white and 2 blue balls. Three balls are drawn at random. Find out the number of ways of selecting the balls of different colours
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Three unbiased coins are tossed, what is the probability of getting at least 2 tails ?
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Ques. In a throw of dice what is the probability of getting number greater than 5
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A man can row at 5 kmph in still water. If the velocity of the current is 1 kmph and it takes him 1 hour to row to a place and come back. how far is that place.
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The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is
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Sahil can row 3 km against the stream in 20 minutes and he can return in 18 minutes. What is rate of current ?
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In how many words can be formed by using all letters of the word BHOPAL
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In how many way the letter of the word "APPLE" can be arranged
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In how many way the letter of the word "RUMOUR" can be arranged
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