A coin is thrown 4 times. What is the probability of getting at least three heads?

$\frac{5}{16}$

The correct answer is Option 3: $\frac{5}{16}$ 

• HHHT, HHTH, HTHH, THHH (4 cases of exactly 3 heads)
• HHHH (1 case of 4 heads)

Total favourable outcomes = 5 

Total number of outcomes = 2ⁿ

= 2⁴

= 16

Probability of getting atleast 3 heads = \(\frac{ 5 }{ 16 }\)