Question

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

Answer 1

On tossing two coins, following outcomes can be observed: $\left\{\right(H,H),(T,T),(H,T),(T,H\left)\right\}$

Therefore, there are total of $4$ possible outcomes.

Now, favourable outcomes are $\left\{\right(H,H),(H,T),(T,H\left)\right\}$

Therefore, no. of favourable outcomes are $3$

Hence, P(Getting atleast one head) $=\frac{3}{4}$