Class 11

Set Theory question bank (Maths)

Practice 636 free Class 11 Maths - Set Theory questions with answers and step-by-step solutions.

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Q1.

Which of the following is the empty set?

(A)

$\{ x : x \text{ is a real number and } x^2 - 1 = 0 \}$

(B)

$\{ x : x \text{ is a real number and } x^2 + 1 = 0 \}$

(C)

$\{ x : x \text{ is a real number and } x^2 - 9 = 0 \}$

(D)

$\{ x : x \text{ is a real number and } x^2 = x + 2 \}$

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Q2.

The set $A = \{ x : x \in \mathbb{R}, x^2 = 16 \text{ and } 2x = 6 \}$ is equal to

(A)

$\phi$

(B)

$\{4, -4, 3\}$

(C)

$\{3\}$

(D)

$\{4\}$

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