Question

Write each of the following set in Roster form and also write its cardinal
number:
a) {x : x is a letter in the word ‘Mathematics’}
b) The set of odd natural numbers between 20 to 30
c) Q = {x : x is a color in the rainbow}

Answer 1

Answer:

cardinal no. is the no. of elemnts present in a set

a) 11

Answer 2

Step-by-step explanation:

a) {m, a, t, h, e, m, a, t, i, c, s}

cardinal number n = 11

b) {21, 23, 25, 27, 29}

cardinal number n = 5

c) {violet, indigo, blue, green, yellow, orange, red}

cardinal number n = 7