the probabilities of getting the sum 0 and 1 are both 50%

送交者: suprathinker 于 2011-03-04, 16:53:16:

回答: why 50% 0 and 50% 1? 由田野于 2011-03-04, 16:45:33:

if u do an even number of summation, u get 1.
if u do an odd number of summation,u get 0.

the probabilities of doing even or odd number of summation are both 50%.