Question

Find the odd one out from the given alternatives $?$

• A. $97$
• B. $233$
• C. $437$
• D. $599$

Answer 1

The correct option is C

$437$

Evaluate the odd one out:

The given numbers are,

$97,233,437,599$

Here we can observe that three of these four numbers are prime but one of them is not a prime number.

$\therefore$$97$ is a prime number since its factors are $1,97$

$233$ is a prime number since its factors are $1,233$

$599$ is a prime number since its factors are $1,599$

But, for $437$ we can see that the factors are $1,19,23,437$.

So, $437$ is not a prime number

Therefore $437$ is the odd one in this series.

Hence option $\left(\mathrm{C}\right)$ is the correct answer.