Question

I have a star question practice I need help on

Answer 1

Given that the bag contains three coloured tiles as,

3 Red, 6 Green and 3 Blue.

A tile is randomly selected, total ways are

`\begin{gathered} =^3C_1+^6C_1+^3C_1 \\ =3+6+3 \\ =21 \end{gathered}`

selecting a green will be given as ,

`\begin{gathered} =^6C_1 \\ =6 \end{gathered}`

So, the required probability is given as,

`\begin{gathered} P=(6)/(21) \\ =0.2857 \end{gathered}`