D Dencology Full Member 10+ Year Member 15+ Year Member Joined Mar 7, 2008 Messages 396 Reaction score 0 Points 0 Pre-Dental Aug 31, 2008 #1 Advertisement - Members don't see this ad Sam has 2 mango and 5 apple. if he picks two fruits one after another, what is the probability that he picks one apple and one mango? i thought i would do this: 5/7 * 2/6 = which is 5/21 but the answer is 10/21. could it be right?
Advertisement - Members don't see this ad Sam has 2 mango and 5 apple. if he picks two fruits one after another, what is the probability that he picks one apple and one mango? i thought i would do this: 5/7 * 2/6 = which is 5/21 but the answer is 10/21. could it be right?
C CYH New Member 10+ Year Member 15+ Year Member Joined Jun 26, 2008 Messages 6 Reaction score 0 Points 0 Aug 31, 2008 #2 The answer is 10/21 because you need to account for the probability the first one is mango and the second one is an apple. So the answer is (5/7 * 2/6) + (2/7 * 5/6) = 10/21 Upvote 0 Downvote
The answer is 10/21 because you need to account for the probability the first one is mango and the second one is an apple. So the answer is (5/7 * 2/6) + (2/7 * 5/6) = 10/21
