Question

7 pink 5 black 11 yellow balls are there. minimum no. atleast to get one black and yellow ball

Answer 1

You could draw all 7 pink balls and 11 yellow balls before finally drawing a black ball, so 19 balls are required before a black & yellow combination is guaranteed.

Answer 2

Thank you for asking this question.

Minimum 19 time

7+ 11 =18  

18+1=19

Means the minimum time required to find this combination would be 19.

Because there are 7 pink balls and 11 yellow balls we will add them and we will get 18.

And then we will add 1 to 18 because that is the lowest possibility of getting that combination. So when we add 18 and 1, we will get 19.

So the answer to this question is 19.

If there is any confusion please leave a comment below.