Question

Two unbiased coins are tossed simultaneously. The probability of getting at least one head is

• A. $\frac{1}{2}$
• B. $\frac{1}{4}$
• C. $\frac{3}{4}$
• D. None

Answer 1

The correct option is C $\frac{3}{4}$

Favourable number of outcomes, getting at least one head = 3 i.e {HH, HT, TH}
Total number of outcomes = 4 i.e {HH, HT, TH, TT}
Probability $=\frac{3}{4}$