1well eureka... what does dis "official solution" mean...? [7]
dont give me official solm..........i cant understand that,,,,,,and i cant do it myself either....
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1try to find d given expression on RHS... u'll get it as co-efficient of x40...
1y x^40
m sorry a silly q.........
bt org is ..........rulin ma head 4 nw :( :(
1well, here goes d solution...
(x+1)30 = ............................................................................. (dun take it as (1+x)... it'll b cumbersome... take (x+1)...)
(1-x)30 = ..............................................................................
multiply both d equations and equate d coefficient of x40...
u'll get LHS = (1-x2)30 ... and co-efficient of x40 on RHS will b d given expression...
u'll get d ans as 30C20... :)
1If all are added with no subtractions then
The quest is same as 2[30C030C10...................+30C1030C20]
is that a - or+ in the quest???
1really m doin org just nw .....................:P
just this method clikd so tld :P
1arey q ni samjah tune likha kya hai????
woh kya 30 divide by 0 hai ya 30C0 hai ???
24@ mrunal, kahaan par????????
@ kalyan, i too cant understand the question.....
1udin' means ud re hai flyin yaar...
woh kya bichmein divison sign hai :P