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April 20, 2014

April 20, 2014

Posted by **Brittany M.** on Thursday, March 1, 2012 at 8:03am.

- Please Please help!! Math - LCM -
**MathMate**, Thursday, March 1, 2012 at 9:06amTo find the next occurrence of extreme famine, we need to find the least common multiple (LCM) of the two recurrence intervals of 13 and 17.

LCM has the property that if the numbers are both prime, LCM is the product of the two numbers.

Since 13 and 17 are both prime, the LCM equals 13*17 = 221.

So it will be 221 years before the locusts come out again in the same year, assuming they are forever regular!

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