Answer
P30 = 1,335
↓Steps Explained:↓
Calculate pentagonal number 30
Pentagonal Number Formula
| Pn = | n(3n - 1) |
| 2 |
Given n = 30, we have:
| P30 = | 30(3(30) - 1) |
| 2 |
| P30 = | 30(90 - 1) |
| 2 |
| P30 = | 30(89) |
| 2 |
| P30 = | 2670 |
| 2 |
P30 = 1,335
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