"A box contains 10 black and 10 white balls. What is the probability of drawing 2
Channel: Doubtnut
Date: 05/04/2020

"A box contains 10 black
 and 10 white balls. What is the probability of drawing 2 balls of the same
 colour?
`9/(19)`
(b) `9/(38)`
(c) `(10)/(19)`
(d) `5/(19)`
(e) None of these"