Q. 1 D4.4( 11 Votes )

# Which of the following are examples of the null set?

B = {x : x ϵ N, 2x + 3 = 4}.

Answer :

Natural numbers = 1, 2, 3, 4, 5, 6,…

If x = 1, then 2x + 3 = 2(1) + 3 = 2 + 3 = 5 ≠ 4

∴ no elements in the set B because the equation 2x + 3 = 4 is not satisfied by any natural number of x.

∴ It is a null set.

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