Question

A number cube, labeled 1 to 6, is rolled three times. The results of the rolls are recorded as odd or even. For example, rolling a 3, then a 4, and then a 4 again would be recorded as O E E. Rolling a 2, then a 5, and then a 6 would be recorded as E O E.



What is the complement of the event in which ,begin emphasis,exactly two,end emphasis, even rolls are recorded?

Answer options with 5 options
A.
O O O or E E E

B.
O E O or O O E or E O O

C.
O E E or E E O or E O E

D.
O O O or E E E or O E O or O O E or E O O

E.
O E E or E E O or E O E or O O O or E E E

Answer 1

Exactly two evens correspond to the three sequences: E E O, E O E, O E E. The complement is the other five sequences:
O O O, O O E, O E O, E O O, E E E.

That matches choice D.