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A = {x : 2 lt x lt 8 " and " x in N} and...

`A = {x : 2 lt x lt 8 " and " x in N}` and `B = {x:3 lt x lt 9 " and " x in W}`. Find `(A - B) nn (B - A)`.
the following are the steps involved n solving the above problem. Arrange them in sequential order.
(A) `A = {3,4,5,6,7}` and `B = {4,5,6,7,8}`
(B) `A - B = {3}, B - A = {8}`
(C) `A - B = {3,4,5,6,7}-{4,5,6,7,8}, B-A ={4,5,6,7,8} - {3,4,5,6,7}`
(D) `(A - B) nn (B - A) = phi`

A

ABCD

B

ACBD

C

ABDC

D

CABD

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The correct Answer is:
B
(A), (C), (B) and (D) is the required sequential order.
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