In how many ways 2 students can be chosen from the class of 20 students?
- 180
- 190
- 240
- None of these
Explanation
The number of ways to choose 2 students from a class of 20 students is represented by the combination formula:
C(20,2) = 20! / (2! x (20-2)!)
where ! denotes the factorial function.
Simplifying the formula, we get:
C(20,2) = (20 x 19) / 2
= 190
So, there are 190 ways to choose 2 students from a class of 20 students.
Related MCQs
- 21
- 13
- 15
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- West
- North
- South
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 6
- 5
- 8
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- $9.00
- $7.00
- $8.00
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Rs 16000
- Rs 8000
- Rs 11000
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *