Question

Which of the following is not an element of the following set:
A: {positive integers divisible by 4}

A) 8
B) 18
C) 48
D) 12

Answer 1

8/4 = 2 so 8 cannot be the answer

Answer 2

12/4 = 3 so 12 cannot be the right answer

Answer 3

you try the other two, and the one that you cant evenly divide by four is the answer

Answer 4

@tjones89 so would 48 be the correct answer?

Answer 5

48 is not the right answer

Answer 6

@tjones89 so 18 is the right answer?

Answer 7

lets find out. If a number is evenly divisible by four, I should be able to add 4 to itself until I get that number

for example 4 + 4 + 4 = 12 so 12 is evenly divisible by 4

Answer 8

4 + 4 + 4 + 4 = 16 so 16 is divisible by 4

Answer 9

4 + 4 + 4 + 4 + 4 = 20 so 20 is divisible by 4, but what happened to 18? We skipped over it, so it must not be divisible by 4

Answer 10

so it would have to be 12, because its evenly divisible by four

Answer 11

nope, the question is asking for a number that is NOT divisible by four

Answer 12

which of the following is NOT an element of the set...

Answer 13

so its 18?

Answer 14

@tjones89 so its 18?

Answer 15

yes

Answer 16

@tjones89 thank you! :)