Question

P is equal to {x: minus 3 less than (or) equal to x less than (or) 0, x belongs to Z} and Q is equal to The set of all prime factors of 210, equivalent sets ?

Answer 1

Answer:

Step-by-step explanation:

Find the cardinal number of the following sets.

(i) A= { x:x is a prime factor of 12 }

(ii) B={x:x∈W,x≤5}

Medium

Solution

(i) Factors of 12 are 1,2,3,4,6,12. So, the prime factors of 12 are 2,3.

  We write the set A in roster form as A={2,3} and hence n(A)=2.

(ii) B={x:x∈W,x≤5}. In Tabular form, B={0,1,2,3,4,5}.