Quiz In Class

Title: Addition theorem for mutually exclusive events

Grade: 9-a Lesson: S3-L5

Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the five problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts.

Quiz: in Class

Problem Id Question Options

1

If a fair 15-sided dice is rolled, then is the probability that the roll is an odd number or prime number or both by using addition theorem.

A) 3/4
B) 5/4
C) 7/4
D) 9/4

2

Neha has 4 yellow t-shirts, 6 black t-shirts, and 2 blue t-shirts to choose from for her outfit today. She chooses a t-shirt randomly with each t-shirt equally likely to be chosen. Find the probability that a black or blue t-shirt is chosen for the outfit by using addition theorem.

A) 7/2
B) 5/2
C) 1/2
D) 3/2

3

A number is selected from the first 20 natural numbers. Find the probability that it would be divisible by 3 or 7 by using addition theorem.

A) 13/20
B) 11/20
C) 9/20
D) 7/20

4

There are 24 red marbles in a bag 68 marbles, and 8 of those marbles are both red and white striped. 27 marbles are white striped and of those marbles, the same 8 marbles would be both red and white striped. Find the probability of drawing out a marble from the bag that is either red or white striped by using addition theorem.

A) 55/68
B) 51/68
C) 53/68
D) 57/68

5

There are a total of 50 distinct books on a shelf such as 20 math books, 16 physics books, and 14 chemistry books. Find is the probability of getting a book that is not a chemistry book or not a physics book by using addition theorem.

A) 1
B) 43/50
C) 25/32
D) 2


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