Question

1) A = { x|x € I , x < 0}
2) P = { y|y € I , y < 0}
3) C = { x|x € N , x < 7 and x > 11}​
which of the following are empty set or not​

Answer 1

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Answer 2

Answer:

Answer 1)

A = {} or phi

(As the root of any negative number is an imaginary number, and not a irrational number that belongs to real numbers)

Answer 2)

P = {} or phi

(As the root of any negative number is an imaginary number, and not a irrational number that belongs to real numbers)

Answer 3)

C = {} or phi

(There is no number which is smaller than 7 but, greater than 11 because 7 itself is smaller than 11)

Hence, all of the sets are null sets or empty sets.

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