Q51. 
While packing for a business trip Mr. Debashis has packed 3 pairs of shoes, 4 pants, 3 halfpants,6 shirts, 3 sweater and 2 jackets. The outfit is defined as consisting of a pair of shoes, a choice of "lower wear" (either a pant or a halfpant), a choice of "upper wear" (it could be a shirt or a sweater or both) and finally he may or may not choose to wear a jacket. How many different outfits are possible? 
A.  $567$ 

B.  $1,821$ 

C.  $743$ 

D.  $1,701$ 
Q52. 
How many positive integers $n$ can be form using the digits $3,4,4,5,6,6,7$; if we want $n$ to exceed $60,00,000$? 
A.  $320$ 

B.  $360$ 

C.  $540$ 

D.  $720$ 