Question

If two coins are tossed simultaneously what is the probability of getting exactly one head?

(a) 1/2

(b) 1/3

(c) 1/4

(d) 3/4

I got this question in an internship interview.

This intriguing question comes from Probability in portion Probability of Mathematics – Class 11

Answer 1

The correct answer is (a) 1/2

To elaborate: If two coins are tossed simultaneously total number of possible outcomes are 4.

{HH, TT, HT, TH} out of which {HT, TH} favour the event.

So, probability of getting exactly one head = 2/4 = 1/2.