Question

The blood groups of some students of Class IX were surveyed and recorded as below :
Probability Class 9 Extra Questions Maths Chapter 15 with Solutions Answers 1
If a student is chosen at random, find the probability that he/she has blood group A or AB.​

Answer 1

Step-by-step explanation:

The blood groups of some students of Class IX were surveyed and recorded as below :

Probability Class 9 Extra Questions Maths Chapter 15 with Solutions Answers 1

If a student is chosen at random, find the probability that he/she has blood group A or AB.

Solution:

Here,

total number of students = 19 + 6 + 13 + 12 = 50

Number of students has blood group A or AB = 19 + 13 = 32

Required probability = 3850 = 1625