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Time taken by all 3 bells to ring together = L.C.M of 28, 60 and 84 = 420 seconds 10 minutes = 10 X 60 = 600 seconds 600 ÷ 420 ~ 1.42 So, the three bells will ring together only once in the given interval of 10 minutes.
A bag contains a certain number of fruits of three varieties: apple, orange, and banana. The total number of apples and oranges is 13, which is 5 more t...
Two hats are picked at random, what is the probability that one is blue and one is yellow?
In a container, there are (x + 4) red balls, ‘x’ blue balls, and (x + 5) black balls. If the probability of picking two blue balls at random is (1/3...
Two hats are picked at random, what is the probability that all hats are of green colour?
A bag contains 16 black and 18 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Ten tickets numbered 1 to 15 are placed in a box, mixed up thoroughly and then one ticket is drawn randomly. If it is known that the number on the drawn...
A fair coin is tossed 6 times. What is the probability of getting exactly either two or three heads?
In a box there are 8 red, 7 blue, and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
