A coin is tossed twice. Probability of getting exactly two Heads is:

A coin is tossed twice. Probability of getting exactly two Heads is:
  1. $\dfrac{1}{4}$
  2. $\dfrac{1}{2}$
  3. $\dfrac{3}{4}$
  4. $\dfrac{1}{3}$

Solution

Sample space $= \{HH, HT, TH, TT\}$. Two Heads $= \{HH\}$. $P = \dfrac{1}{4}$.

Asked in: IMO

Practice more DATA HANDLING questions on Aicharya