Question

Among 5 green balls and 3 blue balls, how many selections can be made that atleast 3 green balls are selected

Answer 1

Answer:

8c5-(5c2+3c3)=56-11=45. then subtracting cases that has less than 3 green ball cases ,,,that leaves with only one case i.e 5c2+3c3 =>here we don't take 5c1 because we have only 3 blue balls.

Answer 2

Answer:

9 selections

Step-by-step explanation:

3G - 1 B

3G - 2B

3G - 3B

4G - 1B

4G - 2B

4G - 3B

5G - 1B

5G - 2B

5G - 3B