+0  
 
+2
463
2
avatar+578 

https://web2.0calc.com/questions/sigma_1

 

i hath been ignoreified

 Feb 26, 2018
 #1
avatar+19934 
+1

There is TWO answers posted at your other thread.....

 Feb 26, 2018
 #2
avatar+578 
0

there are fourteen

OfficialBubbleTanks  Feb 28, 2018

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