12 different biology books and 8 different chemistry books lie on a shelf. In how many ways can a student pick 2 books of each type?  Pick:	A) 80	B) 160	C) 720	D) 1600	E) 1848
No. of ways of picking 2 biology books(from 12 books) = 12C2 = (12*11)/2= 
<gadget id="calculator">(12*11)/2</gadget>
<output>66</output>
66   No. of ways of picking 2 chemistry books(from 8 books)= 8c2 = (8*7)/2= 
<gadget id="calculator">(8*7)/2</gadget>
<output>28</output>
28   Total ways of picking 2 books of each type= 66*28= 
<gadget id="calculator">66*28</gadget>
<output>1_848</output>
1848   (Option 1848)
<result>E</result>
12 different biology books and 8 different chemistry books lie on a shelf. In how many ways can a student pick 2 books of each type?