B is 25 years more than the average age of his two friends whose total age is 30 years. Present age of B = 25 + (30/2) = 40 years Present age of A = (4/5)×40 = 32 years Required difference = 40 – 32 = 8 years
In a container, there are balls of three different colors: purple, silver, and gold. The sum of the number of silver and purple balls equals twice the n...
A bag contains 7 red gems, 8 yellowgems and 5 greengems . 3gems are drawn randomly. What is the probability that theg...
In an examination, there are three sections namely Reasoning, Math, and English. The reasoning part contains 7 questions. There are 4 questions in the m...
Karan has a 65% chance of being admitted to school L and a 55% chance at school M. His preferences are 'L', then 'M', and lastly 'N'. Assuming Karan get...
A box contains 7 blue and 7 green balls. The probability of drawing three balls of the same colour is
A black and a red dice are rolled. Find the conditional probability of obtaining a sum greater than 9, given that the black die resulted in a 5.
What is the probability that a number selected from 1,2,3.......................68,69,70, is perfect square or a perfect cube?
There are two bags P and Q. Bag P contains 5 Yellow and 6 Green balls while bag Q contains 6 Yellow and 5 Green balls. As a part of an experiment, a fai...
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?
A coin is tossed 9 times. Find the probability of almost 2 tails.
