Pass percentage of ca-ipcc

Boss, I heard from my friend who passed only group 1 of IPCC(Group 2 in may) that hte pass percentage of IPCC November 2011 is 15-16%. I am going through different roll numbers , eek, most of them are failing.Very few manage to pass. Some pass G1 but not 2, like my poor friend, who has been failing both groups for the previous 2 attempts. Ppl said it would be easy. My other friend failed. :(