Two marks exercise problems III — task. Mathematics State Board, Class 9.

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1. Which of the following sets are equivalent or unequal or equal sets?

$A$

$=$ The set of vowels in the English alphabets.

$B =$ The set of all letters in the word "VOWEL".

(ii)

$C = \{2, 3, 4, 5\}$ ,

$D = \{x : x ∈\mathbb{W}, 1< x<5\}$

(iii)

$X =$ The set of

$A$

$=$

$\{ x : x$ is a letter in the word "LIFE"

$\}$

$Y = \{F, I, L, E\}$

(iv)

$G = \{x : x$ is a prime number and

$3 < x < 23\}$ ,

$H = \{x : x$ is a divisor of

$18$

$\}$

2. Identify the following sets as null set or singleton set.

(i)

$A = \{x : x ∈ \mathbb{N}, 1 < x < 2\}$

(ii)

$B =$ The set of all even natural numbers which are not divisible by

$2$ .

(iii)

$C = \{0\}$ .

(iv)

$D =$ The set of all triangles having four sides.

Did you find an error?

6. Two marks exercise problems III