# GMAT : Quantitative Section Probability

Your GMAT score can significantly affect your chances of admission. Without a good score, you have little or no chance of making it to a top school

You need to practice on the computer for the writing section of the GMAT. You have to type two essays on the computer in 60 minutes. If you are not used to regularly working on the computer, you might find yourself woefully short of words on the day of the test.

The GMAT requires you to have strong fundamentals in Math (High School) and English grammar.

Note: Probability questions are becoming common on the GMAT. Most test guides are obsolete and do not address these questions.

DON'T guess randomly. Always try to eliminate as many answer choices as possible before you confirm your response.

For Maths section be Cool with Questions are easy so don't be too quick. You won't get extra score if you finish early!

DO use your pencil and scratch paper (both will be provided at the test center).

TIPS on Probability
For Independent Events The probability of A and B P(A and B) = P(A) ? P(B).
In other words, the probability of A and B both occurring is the product of the probability of A and the probability of B.

Probability of A or B P(A or B) = P(A) + P(B).
In other words, the probability of A or B occurring is the sum of the probability of A and the probability of B.
For Dependent Events
If A and B are not independent, then the probability of A and B is
P(A and B) = P(A) ? P(B|A) where P(B|A) is the conditional probability of B given A.

# There are 'm' different ways of doing the first part, and there are 'n' different ways of doing the second part. The problem is to find the number of ways of doing the entire job.