Detailed Instructions: In this task, you need to provide the correct option for a given problem on probability from the provided options.
Problem:Problem: there are 21 students in a class . in how many different ways can a committee of 3 students be formed ? 
Options: a ) 1180 , b ) 1330 , c ) 1540 , d ) 1760 , e ) 1920
Solution:
b