• Member
• Recent Posts

Admin

Latest posts by Admin (see all)

• Which of the following statements correctly describe(s) cathode rays? - 06/27/2022
• A convex mirror is used as a driving mirror because… - 06/27/2022
• A transistor functions mainly as a… - 06/27/2022

In how many ways can 2 students be selected from a group of 5 students in a debating competition?

A. 25 ways

B. 10 ways

C. 15 ways

D. 20 ways

QUICK ANSWER…

B

DETAILS…

The number of ways in which 2 students can be selected from a group of 5 students in a debating competition is 10.

Recall that:

rearrangement = permutation, while

selection = combination.

2 students can be selected from 5 students in ⁵C₂ = 10 ways

Now for the right answer to the above question:

1. Option A is incorrect.
2. Option B is correct.
3. C is not correct.
4. D is not the correct answer.

KEY-POINTS…

You may please note these/this:

In mathematical permutation and combination topics,

• Selection = combination.
• Rearrangement = permutation.

If you love our answers, you can simply join our community and also provide answers like this, fellow learners like you will appreciate it.

/ culled from 2021 JAMB-UTME MATHEMATICS question 2 /