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husnain

Administrator

From: Chichawatni,Pakistan

Registered: 2014-10-03

Posts: 8,129

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Sample:

Question:
A box contains 10 balls out of which 3 are red and rest are blue. In how many ways can a random sample of 6 balls be drawn from the bag so that at the most 2 red balls are included in the sample and no sample has all the 6 balls of the same colour?

Option A):
105
Option B):
189
Option C):
120
Option D):
168 

Correct Answer is Option D):
168

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You cannot discover the new oceans unless you have the courage to lose the sight of the shore.