Which of the following statements is not true ........

Quantitative Aptitude (CDS) Number System

Which of the following statements is not true?

The difference of two prime numbers, both greater than 2, is divisible by 2.

For two different integers m, n and a prime number p, if p divides the product m × n, then p divides either m or n.

If a number is of the form 6n – 1 (n being a natural number), then its is a prime number.

There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.

Option 3^rd is incorrect as 6n – 1 form can be a prime number but it is not necessarily true. Example 35 is of form 6n-1 but is not a prime number

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