Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

A class has 7 boys and 2 girls. What is the probability of choosing 1 boy and 2 girls?

### Question 2

A dice is thrown once. What is the probability that we get a number greater than 4?

### Question 3

What is the probability of getting a head when a coin is tossed in the air?

### Question 4

A box contains 82 red balls and an unknown number of blue balls. If the probability of drawing a blue ball is 2 times the probability of drawing a red ball, then how many blue balls are there in the box?

### Question 5

A class has 5 boys and 3 girls. What is the probability of choosing 1 boy and 2 girls?

**A**

${15/56}$.

**B**

$6/8$.

**C**

$16/56$.

**D**

$20/56$.

**Soln.**

**Ans: a**

Three students have to be picked. Total number of ways = ^{8}C_{3} = ${8 × 7 × 6}/{3 × 2 × 1} = $56. Number of ways of picking 1 boy and 2 girls = ^{5}C_{1} × ^{3}C_{2} = 15. So probability = $15/56$ = ${15/56}$.

### More Chapters | See All...

Inequalities | Verification of truth | Boats and Streams | Matrix Test | Hidden Figures | Alligations and Mixtures | Time and Work | Logarithms | Essential Part | Surds and Indices | More...

This Blog Post/Article "Probability Quiz Set 002" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-06-24.