Z’s weight = 36 – 12 = 24 kgs Required average = (36 + 60 + 24)/3 = 40 kgs
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 a...
Axe speaks truth only when Wye does not speak truth, then what is the probability that Zed does not speak truth on a question?
Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are queens?
All the sides of a 3-inch solid cube are painted. The cube is then cut into cubes of equal size to 1 inch each. If a cube is chosen at random, what is t...
A bag contains 10 black and 12 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
19 rotten bananas are accidentally mixed with 136 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
A bag contains 18 black and 20 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...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 bag contains 25 white and some black balls. If the probability of drawing a black ball from the bag is 1.4 times that of drawing a white ball, find th...
