Instructions

In the followings, a question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.

Question 9

Is n a prime number?
(I) The sum of positive divisors of n is n + 1,
(II) n is a positive integer.

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TS ICET 30th September 2020 Shift-1

Is n a prime number?(I) The sum of positive divisors of n is n + 1,(II) n is a positive integer.

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Is n a prime number?
(I) The sum of positive divisors of n is n + 1,
(II) n is a positive integer.