MATHEMATICS · Multi-part · CBSE · Mathematics · Probability · Probability
Problem
A fair coin is tossed five times.
(i) How many possible ordered sequences of heads (H) and tails (T) can occur?
(ii) Calculate the probability of obtaining at least four heads in the five tosses.
(iii) Verify that your result in part (ii) is equal to 1 minus the probability of obtaining at most three heads, showing all working.