If A = { multiples of 3 between 5 and 25} and B = { even natural numbers upto 16} , then
verify that `n(A cup B) = n(A) +n(B) - n (A cap B)`

If A = { multiples of 3 between 5 and 25} and B = { even natural numbers upto 16} , then find A cup B and A cap B

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)

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 is an even natural number upto 20 } and B = {x | x is a factor of 18} ,find A cap B

If A = {x | x is an even natural number upto 20 } and B = {x | x is a factor of 18} ,find A cup B

If A = { all letters of alphabet } and B = { letters of word LETTER} find : A cup B , A cap B , A cup A , A cap A , B cup B and B cap B Also verify that n(A cup B) = n(A) +n(B) -n(A cap B) .

Prove A cup (B cap C)=(A cup B) cap(A cup C)

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 find n(A) , n(B) , n(A cup B) and n(A cap B)

If A = {letters of word ORANGE } and B = { letters of word MANGO} , find n(A) , n(B) , n(A cup B ) and n (A cap B)

If the mean of first n natural numbers is (5n)/9 , then n= (a) 5 (b) 4 (c) 9 (d) 10