wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A teacher chooses a student at random from a class of 20 boys. What is the probability that the student chosen is a boy?

A
1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
120
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 1
There are 20 boys in the class.

Let P(B) denotes the probability of choosing a student that is a boy.

P(B)=Number of favourable outcomesTotal number of outcomes

In this case,
Number of favourable outcomes =20
Total number of outcomes = 20

P(B)=2020

P(B)=1

Choosing a boy from a class of 20 boys is a certain event as class consists of only boys. This is a case of "Certain Event".

Option (a.) is the correct answer.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction to Probability
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon