November 19th, 2018, 07:35 PM  #21 
Global Moderator Joined: Dec 2006 Posts: 19,986 Thanks: 1853 
It's not necessary to use "T". The use of letters isn't allowed, else one could use "ninety" and arbitrary functions. (14  √9) / .2 = 55 1^4 * 92 = 92 1^4 + 92 = 93 1 * √4 + 92 = 94 1 + 49 * 2 = 99 
November 19th, 2018, 07:45 PM  #22 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,631 Thanks: 954 
T(4) means 1 + 2 + 3 + 4 4! means 1 * 2 * 3 * 4 Sooooo......which is more "simple/natural"? 

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