300,678 views
42 votes
42 votes
A box contains 10 marbles. 7 arbles. 7 of which black and 3 drawn after the other without replacement. Find the probability of getting i). a red , then a black marble ii). Two black marbles​

User Mamills
by
2.8k points

1 Answer

13 votes
13 votes

Answer:

5/10

Explanation:

the 7 out of 10 and the 1 out of 10 combine and make 5 out of 10

User CocoNess
by
2.7k points