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40 votes
40 votes
Here’s the problem (sorry I just thought it would be easier if I send the picture instead):

Here’s the problem (sorry I just thought it would be easier if I send the picture-example-1
User Liran Brimer
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1 Answer

20 votes
20 votes

Question 9

Given

n=100

The triangular numbers are given by the following explicit formulas:

n=100


\begin{gathered} T_n=(n(n+1))/(2) \\ \\ T_(100)=(100(100+1))/(2) \\ \\ T_(100)=(100(101))/(2) \\ \\ T_(100)=(100(101))/(2) \\ \\ T_(100)=(10100)/(2) \\ \\ T_(100)=5050 \end{gathered}

User Kartikey Tanna
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