Finding a problem

Hi people! Sorry by this not interesting post! I just want help to find a problem. I saw this problem but didn't add to my "solve later folder". Well, it is just a double sum of 1/(m+n)! from m,n=1 to infty. I saw it a week ago and did not find it anymore.

Thanks!

#Factorials #DoubleSum

Easy Math Editor

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`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}`	$\boxed{123}$

Comments

If you looked at a problem then you can go to https://brilliant.org/problems/started/ and go back through the list of problems available there to find it. Best of luck!

Bill Bell - 6 years, 2 months ago

https://brilliant.org/problems/frustration-guaranteed/

Jon Haussmann - 6 years, 2 months ago

That link is available under your photo in the top, right-hand corner.

Bill Bell - 6 years, 2 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}`	$\boxed{123}$