Question

When two honest coins are simultaneously tossed, the probability of two heads on any given trial is:

(a) 1

(b) 3/4

(c) 1/2

(d) ¼

This question was addressed to me during an interview.

My enquiry is from The Z-transform Analysis of Sampled-Data Control Systems in section Digital Control Systems of Control Systems

Answer 1

Right choice is (d) ¼

The best I can explain: Total outcomes =4

Favorable outcomes =1

Hence probability =1/4.