Question

IF A = (x:x is a natural number): B = x x is an even number): C = 1x is an odd number
D = (x:x is a prime number). then find AU BAC BAC and BD. What do you notice!
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Answer 1

Answer:

A={1,23,4,5,6,7,8,,,,,,,,,}

B={2,4,6,8,10,12,14,15,,,,,,,,,}

C={1,3,5,7,9,11,13,15,,,,,,,}

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

NOW U CAN FIND EASISILY