The min number is 1 - you can get all three balls of same color if you are lucky on the first try!

Try reframe the question correctly.

hi this prob can b explained like this.

we hav to pich 3 balls of same clr from a bag containing 11 diff coloured balls.

so 1st pick11 balls of 11 diff clrs.

now pick again the 11 diff coloured balls.

now pick 1 ball of any clr.

so tne ans is 23.(now u get 3 balls of same clr).