Question

a) Write the elements and cardinal number of set A and B
A = { x: x is prime number , x < 13)
B = { Set of natural numbers less than 1)​

Answer 1

Answer:

A={2,3,5,11}, n(A)=4.

B={•} ,n(B)=0.

Answer 2

Answer:

Step-by-step explanation:

Given that,

Set A = { x : x is prime number ,x < 13 }

∴ Set A = {2, 3 5 ,7 11 }

Set B = { Set of natural numbers less than 1 }

∴Set B = { Ф }

Cardinal number of set A = n (A)= 5 and

Cardinal number of set B = n (B ) = 0