India plays two matches each with West Indies and Australia. In any match, the probabilities of India getting 0, 1 and 2 points are 0.45, 0.05 and 0.50, respectively. Assuming that the outcomes are independent, the probability of India getting at least 7 points is 

Probability of getting at least 7 points 

        = (probability of getting 2 points each from

3 matches) 

                x (probability of getting 1 point from 

                                                     one match)

 + probability of getting 2 points from each of the 

                                                    four matches

$\begin{array}{l}{=}^4{C}_3\left(0.5{)}^3\right(0.05)+(0.5{)}^4\\ =\left(0.5{)}^3\right(0.2)+(0.5{)}^4=\left(0.125\right)\left(0.7\right)\\ =0.0875\end{array}$