If a and b are odd numbers,then which of the | vedclass

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(D) Let $a$ and $b$ be two odd numbers. We know that the sum of two odd numbers is always an even number. Since $a$ and $b$ are odd,$a+b$ is even. Als

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$a+b+2ab$

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(D) Let $a$ and $b$ be two odd numbers. We know that the sum of two odd numbers is always an even number. Since $a$ and $b$ are odd,$a+b$ is even. Also,the product of two odd numbers is always an odd number,so $ab$ is odd. Now,consider option $D$: $a+b+2ab$. Since $a+b$ is even and $2ab$ is even (as any number multiplied by $2$ is even),the sum of two even numbers is always even. Therefore,$a+b+2ab$ is an even number.

If $a$ and $b$ are odd numbers,then which of the following is even?

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