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Multiples

Write the fol...

Question

Write the following sets in the roster form.

(i) A = {x| x $\in$ I, x $\notin$ W}
(ii) B = {x| x is two digit number such that the product of it's digits is a multiple of ten}
(iii) C = {x| x is a prime divisor of 120}
(iv) D = {x| x $\in$ I and x2 < 10}
(v) E = {x| x = $\frac{n}{n^{2} - 1}, 2 \leq n \leq 4, n \in N}$

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Solution

The roster forms of the given sets are as follows:

(i) A = { ..., -3,-2,-1}

(ii) B = { 25,45,52,54,56,58,65,85}

(iii) C = {2,3,5}

(iv) D = {−3,−2,−1,0,1,2,3}

(v) E = $\{\frac{2}{3}, \frac{3}{8}, \frac{4}{15}\}$

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Similar questions

Describe the following sets in Roster form :

(i) {x : x is a letter before e in the English alphabet}.

(ii) { $x ϵ N : x^{2} < 25$ }

(iii) { $x ϵ N$ : x is a prime number, 10 < x < 20}.

(iv) $x ϵ N : x = 2 n, n ϵ N$ .

(v) $x ϵ R : x > x$ .

(vi) {x : x is a prime number which is a divisor of 60}

(vii) {x : x ix a two digit number such that the sum of its digits is 8}.

(viii) The set of all letters in the word ' Trigonometry'.

(ix) The set of all letters in the word 'Better'.

Write the following sets in roster form:

(i) A = {x : x is an integer and -3 < x < 7}

(ii) B = {x : x is a natural number less than 6 }

(iii) C = {x : x is a two-digit natural number such that the sum of its digits is 8 }

(iv) D = {x : x is a prime number which is divisor of 60}

(v) E = The set of all letters in the word TRIGONOMETREY

(vi) F = The set of all letters in the word BETTER

B = {x | x

}

A = {x : x is an integer and - 3 < x < 7}

B = {x : x is a natural number less than 6}

C = {x : x is a two-digit natural number such that the sum of its digits is 8}

D = {x : x is a prime number which is divisor of 60}

E =

F =

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