please help ASAP

Prob 0 green balls  = (3/7)^3  = .0787

Prob 1 green =   C(3,1) * (4/7) * (3/7)^2  = .3149

Prob 2 green  = C(3,2) * ( 4/7)^2 * (3/7) =  .4198

Prob 3 green =  (4/7)^3  = .1866