The probability of randomly taking 2 blue notebooks from a shelf which has 4 blue and 3 black notebooks.

My work:

(4/7)*(3/6)=2/7

The back of the book says something different though!

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- May 9th 2009, 07:12 AMpuzzledwithpolynomialsEasy probability that is not so easy for me!
The probability of randomly taking 2 blue notebooks from a shelf which has 4 blue and 3 black notebooks.

My work:

(4/7)*(3/6)=2/7

The back of the book says something different though! - May 9th 2009, 08:03 AMHallsofIvy