rodsavo rodsavo
  • 03-05-2017
  • Mathematics
contestada

find the missing numbers 3,__,__,12__,__,21

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GHulamMUhammad
GHulamMUhammad GHulamMUhammad
  • 03-05-2017
multiples of 3
3 6 9 12 15 18 21
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Аноним Аноним
  • 03-05-2017
theres a differnece of 9 between 12 and 3  and also between  12 and 21

looks like an arithmetic series with common difference = 3

so the ful series is 
3,6,9,12,15,18,21
Answer Link

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