Question

Find the probability of a coin landing heads up on every toss when is is thrown 2 times:

Answer 1

As given by the question

There are given that the coin landing heads up every time while coins thrown 2 times.

Now,

If coin is thrown 2 times, then:

The total outcome is:

$\lbrack HH\rbrack,\text{ \lbrack{}HT\rbrack, \lbrack{}TH\rbrack, \lbrack{}TT\rbrack}$

So, the total outcome is 4

Then,

The probability that leading up head every time is:

$\begin{gathered} P=\frac{\text{Total number of outcoe that up head every time}}{\text{Total number of outcome}} \\ P=\frac{1}{4} \end{gathered}$

Hence, the answer is shown below:

$P=\frac{1}{4}$