There are 8 marbles in a box 6 red and 2 black. If you randomly pick 2 marbles simultaneously what is the probability that you will get one red and 1 black marble?
Solution
Correct Answer: Option A
দেওয়া আছে, লাল বল = 6 টি
কালো বল = 2 টি
∴নির্ণেয় সম্ভাব্যতা= ( 6C1 × 2C1 )/ 8C2
= (6 × 2) / 28 = 3/7
কালো বল = 2 টি
∴নির্ণেয় সম্ভাব্যতা= ( 6C1 × 2C1 )/ 8C2
= (6 × 2) / 28 = 3/7
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