An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after the other without replacement.
What is the probability that both drawn balls are black?
🎥 Video solution / Text Solution of this question is given below:
Total balls $= 15$
Probability of drawing two black balls:
$P = \dfrac{10}{15} \times \dfrac{9}{14} = \dfrac{90}{210} = \dfrac{3}{7}$