Answer
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T30 = 465
↓Steps Explained:↓
Calculate triangular number 30
Triangular numbers form a triangle shape
Triangular number formula
| Tn = | n(n + 1) |
| 2 |
Given n = 30, we have:
| T30 = | 30(30 + 1) |
| 2 |
| T30 = | 30(31) |
| 2 |
| T30 = | 930 |
| 2 |
T30 = 465
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