Question

please solve.......
.....




.............

Answer 1

nC4 = nC11
So we gotta find n


Well there's a property that mCx = mCy only when x=y or x+y=m

Here in the question,
clearly 4 isn't equal to 11

So,
4+11 = n to make the equation satisfied

That means,
n = 15

Answer 2

hey mate here is urs answer
by using formula nCa = nCb
here a= 4 , b = 11
n= a+ b
n= 4 + 11
n = 15.
I hope My answer will help u ^_^