0 votes 0 votes An urn contains 10 black and 10 white balls. Draw 3 a) without replacement Probability probability gravner engineering-mathematics conditional-probability + – Pooja Khatri asked Sep 23, 2018 Pooja Khatri 333 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Without replacement, the number of ways are $20 \choose 3$ goxul answered Nov 22, 2018 goxul comment Share Follow See all 0 reply Please log in or register to add a comment.