sophia2924 sophia2924
  • 23-08-2018
  • Mathematics
contestada

What is the rule of this pattern 1, 21, 85, 341

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Аноним Аноним
  • 23-08-2018

5 x 4 +1 =21

21 x 4 +1 = 85

85 x 4 + 1 = 341

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warman215 warman215
  • 23-08-2018

Multiply everything except the first starting number by 4 then add 1

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