Consider the following statements I To obtain prime numbers less than 121 we have to reject all the ...........

Quantitative Aptitude (CDS) Number System

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Consider the following statements:

I. To obtain prime numbers less than 121, we have to reject all the multiples of 2, 3, 5 and 7.

II. Every composite number less than 121 is divisible by a prime number less than 11.

Which of the statements given above is/are correct?

Only I

Only II

Both I and II

Neither I nor II

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Explanation:

Both the statements given are correct. As 121 is the square of 11. So, to obtain prime numbers less than 121, we reject all the multiples of prime numbers less than 11 i.e., 2, 3, 5 and 7.
Similarly, every composite number less than 121 is divisible by a prime number less than 11 i.e., 2, 3, 5 or 7.