Let the present age of B be x years. A’s present age = (x + 4) years C’s present age = (x - 6) years According to question, => [(x + 4) + 5]/(x - 3) = 3/2 => x = 27 C’s age, 6 years ago = (27 - 6) – 6 = 15 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.
