Advertisement Remove all ads

In an Examination, a Student Has to Answer 4 Questions Out of 5 Questions; Questions 1 and 2 Are However Compulsory. Determine the Number of Ways in Which the Student Can Make the Choice. - Mathematics

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

In an examination, a student has to answer 4 questions out of 5 questions; questions 1 and 2 are however compulsory. Determine the number of ways in which the student can make the choice.

Advertisement Remove all ads

Solution

A student has to answer 4 question out of 5 questions.
Since questions 1 and 2 are compulsory, he/she will have to answer 2 question from the remaining 3.
∴ Required number of ways =\[{}^3 C_2 = 3\]

Concept: Combination
  Is there an error in this question or solution?

APPEARS IN

RD Sharma Class 11 Mathematics Textbook
Chapter 17 Combinations
Exercise 17.2 | Q 12 | Page 16

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×