Mathematics · Number System
What is the difference between the sum of the first 'n' odd natural numbers and the sum of the first 'n' natural numbers?
- 1n(n + 1)(2n + 1) / 6
- 2n(n + 1) / 2
- 3n(n - 1) / 2✓
- 4(n / 2) + 1
Correct answer
n(n - 1) / 2
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