4, 12, 84, ...Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What is the next number in this series?
4, 12, 84, 3612.... Answer6526884. To get from 4 to 12, you use the following formula. 12 = (4 squared)/2 + 4.Continue on with (X^2)/2 + X. Hide What Next?
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