28-03-2016
Mathematics

contestada

complete the number pattern 189,209,249,329 809

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SmarticalParticals SmarticalParticals

28-03-2016

189 (+20), 209 (+40), 249 (+80), 329 (+160), 489 (+320), 809 (+640), 1449...

We are adding twice what we added to the previous number. Each time we double what we're adding.

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