Question

Which is a counterexample to this conjecture?



The sum of 3 and any other number is an odd number.



A.
3 + 4 = 7


B.
3 + 51 = 54


C.
3 + 58 = 61


D.


3 + 98 = 101

Answer 1

Look at the answers to your equations. Which answer is NOT an odd number?

Answer 2

B

Answer 3

A counterexample makes this true: The sum of 3 and any other number

But makes this false: is an odd number.

Answer 4

Let's test your answer of B.

Answer 5

ok

Answer 6

3 + 51 --> 3 and an odd TRUE

54 --> is an odd. FALSE

Yes, option B is the counterexample.

Answer 7

OK. Thank you very much:)

Answer 8

You are welcome.