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The â€œinterlockâ€ of two sets is defined as the [#permalink]
19 Dec 2004, 17:29
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5. The “interlock” of two sets is defined as the average (arithmetic mean) of the elements that are common to both sets. If set M contains 12 consecutive integers, the greatest of which is 18, and set N contains 17 consecutive integers, the greatest of which is 30, what is the value of the interlock of sets M and N?