1, 3, 6Math brain teasers require computations to solve.
Your numbers are as follows:
1, 3, 6, 10, 15, 21, 28
What will be the 12th number?
HintLook at the order of the number. I.E. 1 was 1. 2 was 3.
Answer78. Take the order of what I am asking you. That is 12. Then take that number (12) and multiply it by the number following it. (13) Then divide it by 2. You have your answer. This is also called the triangle puzzle.
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