Nerd maths watch three vertical lines with a sub script 2 means what?
111 in binary is 7 base 10.
I’ve just worked out my stupidity but will leave the question for your amusement.
Its not vertical lines. It’s 111 in binary.
Too late.
111 in base two
Nitpick: Among common number bases, it’s also 7 in octal and hexadecimal. 
Counter nitpick: 111 in hex is 256+16+1 = 273 decimal. 111 in octal is 64+8+1 = 73 decimal.
But I get the joke.
Why do computer scientists confuse Halloween with Christmas? Because OCT 31 = DEC 25!
(That is, 31 in octal (base eight) is 25 in decimal (base ten).)
Counter-counter nitpick! The sentence was "111 in binary is 7 base 10. "
This parses into the following constituent tree:
(ROOT
(S
(NP
(NP (CD 111))
(PP (IN in)
(NP (NN binary))))
(VP (VBZ is)
(NP (CD 7) (ADJP base 10)))))
Now my use of “it’s” – “it is” – parallels the third person singular present (VBZ) “is” in the sentence and provides additional possible values for the adjective phrase (ADJP) “base 10”, to wit, the stated octal (base 8) and hex (base 16). Therefore the noun phrase (NP) with the cardinal number (CD) 7 can equally read “7 base 10”, “7 base 8”, or “7 base 16”. This is obvious.
Your move. 
“This product is recommended for ages 3+”
Huh?
Our product has 5x the power as theirs!
Never mind, I blame gremlins.
There are 10 kinds of people in this thread…
Isn’t the one for 9 incorrect? Instead of 9, that watch says
3[π-.14]
But wouldn’t that actually come out to 9 unless they’re assuming π is 3.14, right?
They probably should have picked a simpler math fact than rounding pi to two digits without warning. When they decided on that, they probably chose to cheat rather than have to fill up the watch face* with a full expansion of pi to the infinitely last place.
*the watch face, and every other surface of the watch, and every surface in the entire universe…
They’re probably using the brackets to mean the floor function, also called the greatest integer function. This was standard notation for floor until Iverson introduced the partial-bracket notation in the 1960s; since then Iverson’s brackets have become more common, probably because they’re less ambiguous, avoiding the confusion evident in this thread. Of course they could have just used 3[π].
–Mark
10mod7 and gcf(33,110) are pretty obscure as well,
I had to look them both up before I understood them, although once you understand that gcf stands for greatest common factor, it is a little easier
what’s this?? LSLGuy? You’re back? Yippee!
I’ve done this myself before–threadshit your own OP.
Please report yourself.
Thank you. I’m going to choose to view it this way (even though, as you point out, that makes the whole “-.14” part unnecessary) just to keep myself from being driven mad by the thought that somebody would make a watch for “Math Geek[s]” and then commit the unpardonable sin of assuming pi is 3.14.
In fact, 7 is 7 in any base equal to or higher than base seven.