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The names of 17 students from section A, 18 students from section B and 19 students from section C were selected. The age of all the 54 students was dif...
A coin is tossed four times one by one. What is the probability of getting a tail for the first time, head for the second time and again head for the th...
Find the probability that a number selected at random from first hundred number is a multiple of 3 or 5?
From a well-shuffled deck of 52 cards, two cards are drawn one after the other without replacement. What is the probability that the first card is a red...
A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 2.5 times that of drawing a white ball, ...
Two hats are picked at random, what is the probability that one is blue and one is yellow?
Which of the following cannot be the probability of an event?
Out of three girls and five boys, five children are to be randomly selected for a dance programme. What is the probability that all the selected childre...
A box contains 21 ribbons out of which [A] ribbons are white, and rest is green in colour. The probability of drawing a white ribbon and a green ribbon ...
In a factory which manufactures calculators, machines A, B and C manufacture respectively 25%, 35% and 40% of the calculators. Of their outputs, 5, 4 an...
