Which is a counterexample to this conjecture?

The sum of any two consecutive integers is a composite number.

A.

16 + 17 = 33

B.

10 + 11 = 21

C.

6 + 7 = 13

D.

7 + 8 = 15

Question

Mathematics

Villarreal

5 August, 21:45

Which is a counterexample to this conjecture?

The sum of any two consecutive integers is a composite number.

A.

16 + 17 = 33

B.

10 + 11 = 21

C.

6 + 7 = 13

D.

7 + 8 = 15

+1

Answers (2)

Know the Answer?

Aileen Levine · Answer 1

C. 6 + 7 = 13

because 6 and 7 are consecutive integers, but 13 is not a composite number.

Kianna Fitzpatrick · Answer 2

The answer is C.

33,21, and 15 are all composite numbers. Meaning that they had factors other than 1 and themselves. 13 is a prime number because 13 only factors are 1 and itself.

Which is a counterexample to this conjecture?The sum of any two consecutive integers is a composite number.A.16 + 17 = 33B.10 + 11 = 21C.6 + 7 = 13D.7 + 8 = 15

Which is a counterexample to this conjecture?

The sum of any two consecutive integers is a composite number.

A.

16 + 17 = 33

B.

10 + 11 = 21

C.

6 + 7 = 13

D.

7 + 8 = 15