EM-2925

Number of elements, n(A)

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

The universal set is

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

. Sets

A

and

B

are defined as

A=\{x\in U: x\text{ is a factor of }12\}

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

.
Find

n(A\cap B)

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