Answer: 0.375
Step-by-step explanation:
Each of the games picked can be a w (win) or a l (lose), the chances are equal.
All that could happen in 4 picked games can happen in 6 ways:
(w,w,l,l)(w,l,w,l)(w,l,l,w)(l,w,w,l)(l,w,l,w)(l,l,w,w)
Hence:
P(2w,2l)=6/16=3/8 =0.375