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Post-UTME Mathematics 2013 Objective — Question 54

Question 54 of 100 from the Post-UTME Screening (Post-UTME) Mathematics 2013 Objective paper, with the correct answer and a full explanation.

Let X={a,b,c,d}, which statement is correct?

A. {a}∈X
B. {a,b}∈X
C. b∈XCorrect
D. n(x)=4

Explanation

b is an element of set X, so 'b∈X' is the correctly-used notation.

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