Q.

Let S be a non–empty subset of R.  P : There is a rational number x  S such that x > 0. Which of the following statement is the negation of the statement P?

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a

There is a rational number x S such that x0

b

There is no rational number x S such that x0

c

Every rational number x Ssatisfiesx0

d

 x S and x0Xis not rational

answer is C.

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Detailed Solution

 p: at least one rational number x S such that x>0

~p: There is no rational number x S such that x>0

ie. All rational numbers x S satisfy x0

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Let S be a non–empty subset of R.  P : There is a rational number x ∈ S such that x > 0. Which of the following statement is the negation of the statement P?