Question

Find the complementary event of the given event.

an odd number on a spinner with equal-sized sections labeled 1–8



A.
a number less than 4


B.
a number greater than 4


C.
a multiple of 3


D.
an even number

Answer 1

@twvogels

Answer 2

"Complementary event" of 'A' means the opposite of 'A' or "not A'.

In this case they ask for the complement of "an odd number" which means "Not an odd number" or "The opposite of odd numbers." i.e.: "All the even numbers." The answer is (D).


If you needed the probability (not asked for here but good to know how to do it):

There are 4 even numbers (2,4,6 and 8) our of 8 possibilities. So the probability is \[\frac{4}{8} =
\frac{1}{2}\] or 50%

Answer 3

so D.?

Answer 4

Yes.

Answer 5

ok thanks! :)