Mining Engineering > GATE 2023 > Aptitude
There are 4 red, 5 green, and 6 blue balls inside a box. If N number of balls are picked simultaneously, what is the smallest value of N that guarantees there will be at least two balls of the same colour?
One cannot see the colour of the balls until they are picked.
One cannot see the colour of the balls until they are picked.
Correct : c
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