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观察右边数表,若用有序实数对(m,n)表示第m行第n列的数,如:(4,3)表示实...
观察右边数表,若用有序实数对(m,n)表示第m行第n列的数,如:(4,3)表示实数6,则(20,18)表示的数是( )
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A.18
B.20
C.37
D.38
考点分析:
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