### Brain Teasers

# 1, 3, 6

Your numbers are as follows:

1, 3, 6, 10, 15, 21, 28

What will be the 12th number?

1, 3, 6, 10, 15, 21, 28

What will be the 12th number?

### Hint

Look at the order of the number. I.E. 1 was 1. 2 was 3.### Answer

78. 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.Hide Hint Show Hint Hide Answer Show Answer

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