Quiz Question 11: Let the set B = {m; n; p; q}. What is the number of two-element subsets of set B?

Think and answer the question before looking at the answer

The subsets of set B with two elements are

{m; n}; {m; p}; {m; q}; {n; p}; {n; q}; {p; q}

So there are 6 subsets with 2 elements of the set B

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