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Ratio of investment = 6:3:4 The ratio of profit = 12:3:8 Ratio of period = ratio of profit/ratio of investment => 12/6 : 3/3 : 8/4 => 2 : 1 : 2
A bag contains 13 white and some black balls. If the probability of drawing a black ball from the bag is twice that of drawing a white ball, find the nu...
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...
Two hats are picked at random, what is the probability that all hats are of green colour?
A bag contains black and white balls, such that the probability of picking a black ball is 4/7. If the probability of picking two black balls without re...
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?
...The probability of selecting a rotten apple randomly from a heap of 1050 apples is 0.36. What is the number of rotten apples in the heap?
An instructor has a question bank consisting of 200 easy True / False questions, 300 difficult True / False questions, 400 easy multiple-choice question...
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...