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  • 25-12-2018
  • Mathematics
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What is a number between 364 and 384 that is a multiple of both 3 and 7

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Аноним Аноним
  • 25-12-2018

Answer:

378

Step-by-step explanation:

It will also be a multiple of 21 .

As it is divisible by 3  the first possibility is 366 so:-

364 + n = 21m

where n = 2,5,8,11,14...

Trying each number in turn we get:-

364 + 14 = 21m

21m = 378

m =  18

so the answer is 378



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