Title:
Step-by-step explanation:
There is a 20% chance of winning a bid.
Hence, the chance of losing a bid is (100 - 20) = 80%.
It is given that i have win in X bids out of total 6 bids.
I have loosed in (6 - X) bids.
Again, from 6 bids we can chose X bids in [tex]^6C_X[/tex] ways.
Hence, the required probability is [tex]^6C_X\times (\frac{20}{100} )^X \times (\frac{80}{100} )^{6 - X} = ^6C_X\times (\frac{1}{5} )^X \times (\frac{4}{5} )^{6 - X}[/tex].
