A basket contains 6 blue, 2 red, 4 green and 3 yellow balls. If four balls are picked up at random, what is the probability that 2 are red and 2 are green?

• ক 4/15
• খ 2/455 ✅ সঠিক উত্তর
• গ 5/27
• ঘ 1/3