EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 10 - Probability>BITSAT 2018>Q 4

MEDIUM

BITSAT

IMPORTANT

Earn 100

The sum of mean and variance of a Binomial distribution $(\vec{B D})$ for $3$ trials is $2.7$ , then the binomial distribution $\vec{B D}$ is given by

40% studentsanswered this correctly

Important Questions on Probability

EASY

BITSAT

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 10 - Probability>BITSAT 2018>Q 5

Let

A

and

B

are two independent events. If the probability that both

A

and

B

occur together is

\frac{1}{6}

and the probability that neither of them occurs is

\frac{1}{3}

, then the probability of occurrence of

A

is

HARD

BITSAT

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 10 - Probability>BITSAT 2018>Q 6

In a test an examiner either guesses or copies or knows the answer to a multiple choice question with

4

choices. The probability that he/she makes a guess is

\frac{1}{3}

. The probability that he/she copies the answer is

\frac{1}{6}

. If the probability that the answer is correct, given that he/she copied it is

\frac{1}{8}

, then the probability that he/she knows the answer to a question given that he/she correctly answered it, is

MEDIUM

BITSAT

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 10 - Probability>BITSAT 2017>Q 7

If the papers of

4

students can be checked by any one of the

7

teachers, then the probability that all the

4

papers are checked by exactly

2

teachers, is equal to

HARD

BITSAT

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 10 - Probability>BITSAT 2017>Q 8

A coin is tossed

7

times. Each time a man calls head. The probability that he wins the toss at least four times is