If N is natural number A= Factors of N} and B{Multiples of N} , then `n(A cap B)=_____.

If A = {x : x is an even natural number upto 20 } and B = {x : x is a factor of 18} ,find n (A) , n(B) , n(A cup B) and n (A cap B) Also varify that n(A)+n(B) = n(A cup B ) +n(A cap B) .

If A= {x: x in N , x is a factor of 6} and B = { x in N : x is a factor of 8} then Find (i) A cap B , (ii) A cap B , (iii) A-B, (iv) B-A .

If A={x:x=3n,n in N} and B={x:x=4n,n in N} , then find A cap B .

If A={x:x=3n,n in N} and B={x:x=4n,n in N} , then find A cap B .

if A= {x:x in N , x is a factor of 12 } and B={x:x in N , x is a factor of 18}, Find A cap B .

If A = {4n+ 2| n is a natural number} and B = {3n|n is a natural number}, then what is (A nn B) equal to?

If A = {x | x in B , x le 10} and B = {x | x in W , x le 15 and x is a multiple of 5 } , then verify that n(A cup B) = n(A) +n(B) -n(A cap B)