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CAT exam is all about how smartly you solve the question in the quickest way. To help you with that, we at EduRev have started a summary sheet of formulae which will have all the shortcuts & formulae in one sheet. In this document you would be revising all the important parts of Probability, this document helps you in understanding the shortcuts & formulae of probability in a faster way.
Important Tips & Formulae of Probability
The probability of an event A is the number of ways event A can occur divided by the total number of possible outcomes. The probability of an event A, symbolized by P(A), is a number between 0 and 1, inclusive, that measures the likelihood of an event in the following way:
Example: If a number is selected at random from the 2 digit 6 multiples, what is the probability that it is divisible by 9?
Solution. Total 6 multiples = 12,    , 96 ⇒ 15.
Required numbers are both multiples of 6 & 9
i. e, the multiples of 18. Those are 18, 36,   , 90, total 5.
∴ Ans =
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