Why so easy to cheat in some kinds of questions?

Main post link -> http://www.wolframalpha.com/

Suppose I take the given question (1/(123))+1/(234))+...+1/(n(n+1)(n+2))= Place it into the question bar of wolframalpha.com, click for a search and Voila!!! You get SUM{1/(k(k+1)(k+2))}=.... I am not here to teach people to cheat, where in fact this search engine may be useful for studies, but questions on Brilliant should be formalized in a way, one can't use this computational search engine. So I ask you all what do you think???

#Opinions #QuestionsOrSuggestionsForBrilliant

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This thread already exists here

Harshit Kapur - 8 years, 4 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$