Question

Consider the two events A and B when x is a whole number.


A equals StartSet 4 is less than x which is less than or equal to 15 EndSet

B equals StartSet 0 is less than or equal to x which is less than 20 EndSet

Question
Which subset represents B and not A?

Answer options with 4 options
A.
StartSet 0 comma 1 comma 2 comma 3 comma 4 comma 16 comma 17 comma 18 comma 19 EndSet

B.
StartSet 0 comma 1 comma 2 comma 3 comma 16 comma 17 comma 18 comma 19 comma 20 EndSet

C.
StartSet 0 comma 1 comma 2 comma 3 comma 4 comma 15 comma 16 comma 17 comma 18 comma 19 EndSet

D.
StartSet 5 comma 6 comma 7 comma 8 comma 9 comma 10 comma 11 comma 12 comma 13 comma 14 comma 15 EndSet

Answer 1

B \ A = {0,1,2,3,4,16,17,18,19}, so option A.