No
4
-
- Why are the numbers 1, 3, 6, 10, 15,
21 ... called Triangular Numbers?
-
Try to extend this remarkable
pattern:
3(1+3)3 = 13+33+2(14+34) = 192
- 3(1+3+6)3 = 13+33+63+2(14+34+64) = 3000
3(1+3+6+10)3 = ? =
?
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