# Q7. If A = {x : x is a natural number }, B = {x : x is an even natural number} C = {x : x is an odd natural number} and D = {x : x is a prime number }, find(i) A  B (ii) A  C (iii) A  D (iv) B  C (v) B  D (vi) C  D

Here, A = {1,2,3,4,5,6...........}

B = {2,4,6,8,10...........}

C = {1,3,5,7,9,11,...........}

D = {2,3,5,7,11,13,17,......}

(i) A  B = {2,4,6,8,10........} = B

(ii) A  C = {1,3,5,7,9.........} = C

(iii) A  D  = {2,3,5,7,11,13.............} = D

(iv) B  C  =

(v) B  D  = {2}

(vi) C  D = {3,5,7,11,13,..........} =

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