I just waste my 12th year because of diabetice.i wanted to be an iit student , shall I retry jee next year that i going to do! and I know can get nearly 250 mark in jee main . So what I do???

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

 

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

Can class 9th students study syllabus class  of 11th 

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?