Answer
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T45 = 1,035
↓Steps Explained:↓
Calculate triangular number 45
Triangular numbers form a triangle shape
Triangular number formula
| Tn = | n(n + 1) |
| 2 |
Given n = 45, we have:
| T45 = | 45(45 + 1) |
| 2 |
| T45 = | 45(46) |
| 2 |
| T45 = | 2070 |
| 2 |
T45 = 1,035
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