Question

Two consecutive integers $m$ and $n$ are prime numbers. Calculate $mn$.

• A. $1$
• B. $2$
• C. $6$
• D. $9$
• E. $15$

Answer 1

Answer: (C)

$6$

Prime numbers are numbers which have only $2$ positive divisors $1$ and the number itself.
Some of prime numbers are $2,3,5,7,\mathrm{11......}$
Consecutive numbers are numbers one after another that is they have a difference of $1$ between every two number.
$2$ and $3$ are such prime consecutive integer.
Let $m$ be $2$ and $n$ be $3$.
So $mn=3\times 2=6$