Match the following Curves in Group-I with their corresponding uses in Group-II.

P (Mass Curve) is a graphical representation of cumulative inflow (supply) and outflow (demand) over time. Hence, P–2.
Q (Lorenz Curve) is a graphical representation of income or wealth inequality. Hence, Q–1.
R (Density Curve) is an idealized representation of distribution in which the area under the curve is defined to be 1. Hence, R–5.
S (Horizontal Curve) provides a transition between tangent strips of roadway, allowing a vehicle to negotiate a turn. Hence, S–4.
Thus, the correct match is (D) P–2, Q–1, R–5, S–4.
P and Q play chess frequently against each other. Of these matches, P has won 80% of the matches, drawn 15% of the matches, and lost 5% of the matches.
If they play 3 more matches, what is the probability of P winning exactly 2 of these 3 matches?