Hey Kamal,
The CT's are 80% based on technical skills (hence the name
And it's quite hairy stuff hey: CT4, CT5, CT6 use a fair deal of math (algebra, calculus) and stat's (applied stats, prob theory and random processes). CT8 is just financial maths with loads of calculus.
If you can grasp and remember the mathematical/statistical principals well enough from the earlier maths/stats exams, I see no reason for not giving it a go! My friend, who works in a health-care actuarial firm, said one of the doctors whom he's working with wants to start taking exams (!!). If they can do it, I'd say anybody can
Let us know what your final answer is (keeping to the theme of Slumdog Millionaire!)
Cheers!