3ok sir i will now on follow ur advise.
i m very weak in topics probability,permutation can anybody give important topics or pitfalls that i had to remembered while solving problems in these chapters
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62It is about ur instinct.
RULE1 : Dont learn any formula!
RULE 2 : Dont forget Rule 1.
62these chapters are my favorites...
I think you dont ever need anything other than knowing nCr and nPr.
The only thing you will need is the case when there are repetitions.
N!/(n1!.n2!...)
This si understandable.. but many ppl tend to learn this ! (which i dont see too much of a problem in)
33Rule 3: some smart tukkas may help..
Look for a symmetry in the situation and if u get one question reduces to just one word..