kulkarani....i think 20k is corect..
array would be stored in asingle page like this....
0,0.....0,199
1,0 ....1,199.....loop accessing array like this....
00F
10H
20F
30H...and so on....means at every access of array there would be one F and one hit.....
and here total 200*200 access and half of the access would be Hit...
so total access 40000/2=20k