Question

If x represents the probability of an event happening, then which of the following represents the probability that the event will not happen?
-x
1 - x
x - 1

Answer 1

which one do you think it is?

Answer 2

-x

Answer 3

say x is 30%

so -x is -30%

is that possible?

Answer 4

a negative probability is possible?

Answer 5

are you sure?

Answer 6

no

Answer 7

it turns out that probabilities must be positive

Answer 8

it would make it the bottom one to come out positive

Answer 9

are you referring to x-1?

Answer 10

yes

Answer 11

well if x = 0.3, then x -1 = -0.7, which is also not possible

Answer 12

oh now i see the second

Answer 13

yes,

ex: if x = 0.4, then 1-x = 1-0.4 = 0.6