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FIawless
FIawless FIawless
  • 21-05-2015
  • Mathematics
Answered

Find the probability:


A shelf hold 3 novels, 2 biographies, and 1 history book. Two students in turn choose a book at random. What is the probability that the student choose the following?


a history, then a novel


1/2

1/5

1/10

1/15

Verified Answer :

arewar
arewar arewar
  • 21-05-2015

Part 1:

3+2+1 = 6 total units

There is only 1 history book.

1/6 total.

Part 2:

6-1 (we've lost the history book) = 5 total units

3 novels. = 3/5

Part 3:

1/6 * 3/5 = 3/30 or 1/10


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cececraft
cececraft cececraft
  • 21-05-2015

the answer is 1/2 because i look at the numbers

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