Question

Which is a counterexample to the conjecture? The product of any two consecutive integers is a composite number.


A.
3 • 4 = 12


B.
30 • 31 = 930


C.
1 • 2 = 2


D.
10 • 11 = 110

Answer 1

are there any options that have non composite numbers on right hand side ?

Answer 2

@Dlwillis

Answer 3

hint : `2` is a non composite number

Answer 4

so it is not A or C.

Answer 5

@ganeshie8