Question

${119}^2-{111}^2$ is :

• A. Prime number
• B. Composite number
• C. An odd prime number
• D. An odd composite number

Answer 1

The correct option is B Composite number

In the given question,

${119}^2-{111}^2$

By applying $a^2-b^2=(a+b)(a-b),weget=(119+111)(119-111)=230\times 8$

Here, we can see that ${119}^2-{111}^2$ is divisible by both 8 and 230 so it is composite number.

So, the answer must be a composite number.

So, correct answer is option B.