Write the following sets in the roster form:
(i) A = {x|x is a month of the Gregarian year not having 30 days}
(ii) B = {y|y is a colour in the rainbow}
(iii) C = {x|x is an integer and -4 < x < 4}
(iv) D = {x|x ∈ 1, $-$ 3 < x ≤ 3}
(v) E = {x|x = (n $-$ 1)³, n < 3, n ∈ W}

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Solution

Roster form: In this method, a set is described by listing he elements, separated by commas, within braces {}.

(i) A= {January, February, March, May, July ,August, October, December}

(ii) B={Red, Orange, Yellow, Green , Blue , Indigo, Violet}

(iii) C= { $-$ 3, $-$ 2, $-$ 1,0,1,2,3}

(iv) D = { $-$ 2, $-$ 1,0,1,2,3 }

(v) E = { $-$ 1,0,1}

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Similar questions

List all the elements of the following sets:

(i) A = {x : x is an odd natural number}

(ii) B = {x : x is an integer, 1/2 < x < 9/2}

(iii) C = {x : x is an integer, $x^{2} \leq 4$ }

(iv) D = {x : x is a letter in the word "LOYAL"}

(v) E = {x : x is a month of a year not having 31 days}

(vi) F = {x : x is a consonant in the English alphabet which precedes K}

- \frac{1}{2} < x < \frac{9}{2}

=

\subset

A = \{x : x^{2} \leq 10, x \in Z\}

B = \{x : x = \frac{1}{2 n - 1}, 1 \leq n \leq 5\}

C = \{x : x is an integer, - \frac{1}{2} < x < \frac{9}{2}\}

A = {x | x

30

}

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