PNC

In a box there are 5 red 6 green and 3 white balls are present we need to select 4 balls , In how many ways we can select such that atleast 2 green balls are selected?
I have a doubt should we remove case of selection of one green ball and no green ball to reach answer.

@YouKnowwhere
Direclty select two greens and then select 2 balls from left balls

@ashishdeosingh but it is atleast case so we it also contains 3 green , 4 green , 5 green cases then how what you said is correct .