EM-2924

Number of elements, n(A)

E Math · Secondary 4 · Medium · Number of elements, n(A)

A universal set

U = \{1,2,3,4,5,6,7,8,9,10\}

. Sets

A

and

B

are defined by

A=\{x\in U: x\text{ is even}\}

and

B=\{x\in U: x>6\}

. How many elements are in

A\cap B

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