- #1
anigeo
- 84
- 0
nC0+nC1+nC2+.....+nCn=2^n
in the analytic proof for this my books say that it is the total number of combinations of n different things taken at least 1 at a time.
they say that each object can be dealt in 2 ways, either it can be accepted or it can be rejected.
hence n objects can be dealt in 2^n ways.
but how in selection how does the question of rejection come?what is the significance of this rejection?please explain.
in the analytic proof for this my books say that it is the total number of combinations of n different things taken at least 1 at a time.
they say that each object can be dealt in 2 ways, either it can be accepted or it can be rejected.
hence n objects can be dealt in 2^n ways.
but how in selection how does the question of rejection come?what is the significance of this rejection?please explain.