7 Pink, 5 Black, 11 Yellow balls are there. Minimum no. atleast to get one black and yellow ball?

Question

7 Pink, 5 Black, 11 Yellow balls are there. Minimum no. atleast to get one black and yellow ball

Answer 1

3

Answer 2

what?

Answer 3

To guess would be to fail, but then to fail would be to guess.  Simply type a few more letters to create words that would provide information in order to help gather information to help you formulate an outcome.  

Don't worry, I too sometimes ask questions without providing enough information.  

JB

Answer 4

17

Thanks for the deloitte aptitude test.

Answer 5

The minimum you need to choose to guarantee that you have one black and one yellow is 19.

In the worst case, you will pick 18 balls before getting a black: all of the pink (7) and all of the yellow (11). On your 19th pick, you will be guaranteed to have at least one black and one yellow.