Question

E = {x | x = (2n + 1), n € W, n<4} ​

Answer 1

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Answer 2

Answer:

On putting n=1,2,3,... in x=2n+1, we get

x=3,5,7,...

Therefore, in roster form the given set is

{3,5,7,...}

step by step explanation:

The given sets are:

A={x:x∈N}={1,2,3,4.....}

B={x:x=2n,n∈N}={2,4,6,8,10....}

C={x:x=2n−1,n∈N}={1,3,5,7,9.......}

D={x:x is a prime number}={2,3,5,7,11,13....}

∴ A∩B={1,2,3,4....}∩{2,4,6,8....}

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

=B

Hence

A∩B=B

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