i) B is the set of all months in a year having 30 days

Question

Write the following sets in the roster form.

i) B is the set of all months in a year having 30 days.

ii) P is the set of all prime numbers smaller than 10. 

iii) X is the set of the colours of the rainbow.

Answer 1

i) B = {April, June, September, November} 

ii) P = {2, 3, 5, 7} 

iii) X = {Violet, Indigo, Blue, Green, Yellow, Orange, Red}