It is given that, the probability of winning a game is 0.8. What is the probability of losing the game?

Given, P (winning a game) = 0.8

We know that,

P (winning a game) + P (not winning a game) = 1 (1/2)

=> 0.8 + P (not winning the game) = 1

=> P (not winning the game) = 1-0.8

=0.2