Hii Rishiv

• There are several books for the preparation of P And C like R D Sharma, Arihant , and previous year JEE main papers are enough for you to brush up your P and C concept.

• Good luck

Hello , This topic needs mathematical reasoning,observing strategy.It is all about counting.F irst, unnderstand how the counting process encapsulated by the npr, ncr works.
Next thing is to reduce the size of the problem, then observe a pattern and then generalise it.
First read the concepts given in NCERT.
Later refer Hall and Knight. It is great one.
Practice makes us perfect. Practice as much as you can.

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