First slide

Combinations

Question

In how many ways can a student choose a program of 5 courses, if 9 courses are available and 2 specific courses are compulsory for every student?

Moderate

A

34
B

36
C

35
D

37

Solution

Total number of available courses = 9 Out of these 5 courses have to be chosen.
But it is given that 2 courses are compulsory for every student
i. e , you have to choose only 3 courses instead of 5, out of 7 instead of 9.is $7_{C_{3}} = 35$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App