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My niece is a lively and garrulous child who happens to be the favorite student of all her teachers.
There are a total of 42 students (boys and girls) in a class. The probability of picking at least one boy when two students are picked from the class is...
40 pens are there in a box where 22 are red pens, ‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blu...
A bag contains 9 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
A bag contains 20 black and 22 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...If a coin is tossed repeatedly and the head appears for the first 94 times then what is the probability that the tail appears on the 95th toss?
A box contains only three colors of balls- red, green and blue. What is the minimum number of balls that should be picked from the box to ensure that at...
If two dice are rolled simultaneously, what is the probability that the sum of the numbers on the two dice is greater than or equal to 10?
A student is required to select 4 questions to attempt from a set of 10 questions. How many different ways can the student make this selection?
