Enter a positive integer to calculate its termial sum in seconds.
A termial is the sum of all natural numbers from 1 to \( n \), often denoted as \( n? \). It can be calculated using the formula: \( n? = 1 + 2 + 3 + \ldots + n = \frac{n(n + 1)}{2} \) Here, \( n? \) represents the termial of \( n \).
Solution:
\( 5? = \frac{5(5 + 1)}{2} = \frac{5 \times 6}{2} = 15 \)
Result: The termial of 5 is 15.
Solution:
\( 10? = \frac{10(10 + 1)}{2} = \frac{10 \times 11}{2} = 55 \)
Result: The termial of 10 is 55.
Solution:
\( 100? = \frac{100(100 + 1)}{2} = \frac{100 \times 101}{2} = 5050 \)
Result: The termial of 100 is 5050.