Selina Concise Class 6 Math Chapter 10 Sets Exercise 10C Solution
EXERCISE 10C
(1) Write each of the following sets in the Roster Form:
(i) {3, 6, 12, 15, 18}
(ii) {-3, -2, -1, 0, 1, 2, 3}
(iii) {s, c, h, o, l}
(iv) {11, 13, 15, 17, 19}
(v) {a, e, i}
(vi) {m, d, r, s}
(2) Write each given set in the Roster Form:
(i) {2, 3, 5, 7, 11, 13, 17, 19}
(ii) {12, 22, 32, 42} = {1, 4, 9, 16}
(iii) {2, 4, 6, 8}
(iv) {a, b, c, d, e, f, g, h}
(v) {b, a, s, k, e, t}
(vi) {Jaipur, Jhansi, Jodhpur, Jalandhar}
(vii) {⎔, ∆, ▭, o}
(viii) {o, a}
(ix) {0, 1, 4, 9}
(3) Write each given set in the Set-Builder Form:
(i) {X : X is an even natural number less than 12}
(ii) {X : X is a prime number less than 12}
(iii) {X : X is a month whose name starts with letter J}
(iv) {X : X is a vowel in English alphabet}
(v) {X : X is a day of the week whose name starts with letter T}
(vi) {X : X is a perfect square natural number up to 25}
(vii) {X : X is a natural number up to 30 divisible by 5}
(4) Write each of the following sets Roster Form and also in Set-Builder Form:
(i) {1, 2, 3, 4, 6, 8, 12, 24}
{X : X is a natural number which divides 24 completely}
(ii) {21, 23, 25, 27, 29, 31, 33}
{X : X is an odd number between 20 and 35}
(iii) {c, a, l, u, t}
{X : X is a letter used in the word ‘CALCUTTA’}
(iv) {January, February, March, April, May}
{X : X is a name of first five month of a year}
(v) {16, 25, 36, 49, 64, 81}
{X : X is a perfect square of two digit number}
(5) Write in Roster Form, the set of:
(i) {5, 15, 25, 35}
(ii) {18, 24, 30}
(iii) {Friday, Saturday, Sunday}
(iv) {September, October, November, December}