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?

• ক 168 ✅ সঠিক উত্তর
• খ 189
• গ 105
• ঘ 120