Question

R and S are subsets of the universal set (e), such that,e ={intergers between 11and 26} A = {even numbers} B= {multiple of 3}
(i) find n(e)
(ii) list the members of the set
A
B

Answer 1

Answer:

i) 16

ii) A=12,14,16,18,20,22,24,26

B=12,15,18,21,24

Step-by-step explanation:

i) For the universal set there is 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26 and n(e)=16 but it can be worked out more easily by doing 26-11+1 and the one is added because it includes both 11 and 26 in the set and by not doing this it would only include one of them

ii) Set A is all even numbers so 12,14,16,18,20,22,24,26

Set B is multiples of three so 12,15,18,21,24