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So You're a Mathematician? - September 19, 2009Rating: 4.8/5 (130 votes cast)
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Lmao! As a math geek who can't manage simple arithmatic, I whole-heartedly approve!
as a recent phd graduate of mathematics, I get asked these kinds of questions all the time... and I still don't know what 11 x 13 is!!
11 x 13? Plenny!
My resopnse would be "No 1 cares. I've said this be4. This is the 3rd time."
A friend of mine once said "I majored in Mathematics, not Arithmetic!".
143. Sheesh, it's easy multiplying by eleven; just multiply by ten and add the original.
Wow. Why is it that I have never heard it put that simply before? All my years of school (including graduate school) and I get the best method from a comment on a comic. :-)
Actually, there's an even smarter way. Add the two digits and place them in the middle of the original number:
11*13=143
11*36=396
11*47=517(carry over)
Wow, I'm a math and science guy and it amazes me whenever I learn a trick like that. Math is a beautiful thing.
That's what I do.
What base? Decimal or hexadecimal? Can I use a calculator?
I am not a mathematician, but I sure can do arithmetic. I love this comic.
That's because Sonic Lover is a Alpha Geek.
Seriously guys?
Multiplying by eleven is easy by head, no matter what the second number is.
For you!
Well, I honestly can't add 130 + 13. You know 13 is a very scary looking number. (It is, trust me!!) heh
You guys, 11x13 = 12^2-1 = easy.
A fellow mathematician once told me: There are three kinds of mathematicians: those who can count and those who can't.
Given that, how do you expect us to do higher arithmetic? There's a reason I like algebra. X times Y is always XY, but who can figure out what 11 and 13 make?
Wait. Doesn't that make eight kinds of mathematicians?
11 times 13 is 1113 by bmonk logic,
Who said they were numbers?
For mathematicians.. numbers don't even exist.. they might as well be letters or drawings..
he could have said: it gives up kittens! makes no difference
wow..i cant iterate how much i can relate to this comic. i get an entire formula worked out, then in the end i do 2+3=6 or something like that
SHEESH YOU PEOPLE! 143!
Also what is it with the algebra?? this is just simple multiplying!!!
And also, PLEASE, SOMEONE TELL ME, what is the difference between Maths and arithmatic?
plz reply!
How to easily calculate 11*13
if x= 10
then, 11= x+1, 13= x+3
(x+1)(x+3)=(x^2+4x+3)
(10^2+4*10+3)=143
That was easy, wasn't it?
You guys missed an intro step in your High School algebra classes. You all know how to do (x+1)(x+3)
Well what about (10+1)(10+3) or 13(10+1)
Both of those are really simple to do. Come on guys.
There's a WAYYY easier way to multiply by 11:
Take the two digits of the multiplicand, add them together, and put the result in the middle!
13 x 11 ---> 1 + 3 = 4
therefore 1"4"3
works with any... 11 x 53 = 583
11 x 72 = 792
(if the sum is 10 or more, carry the one)
11 x 76 = 836 (not 7136, obviously)
See, this is why I always transform an arithmetic problem into an algebra problem, like all the comments have described. Mathematicians don't do arithmetic!
Hmmm... To be fair, I'm mathematician but I still try to keep up with arithmetics as much as possible. Not because it's related to math, but because it's friggin' handy if you can multiply and divide fast.
How come nobody paid attention to 143? 143 = love, mathematicians don't know love? :O
"Because 1... is the loneliest number!"
You know, unless it's next to zero, then it's binary, and it's never alone.
Your logic is based on the premise that that which is alone is also lonely. I use myself as a case in point to counter that claim.
Geez guys!
the answer is I Love You!
that guy let that chick slip right through his palms!
13 * 11
(12+1) * (12-1) = 12^2-1 = 144-1 = 143
To multiply 2 digit number with 11 is pretty easy.
11*XY=X?Y, where ? is sum of X and Y
f.e.
11*35=3?5=385 (?=3+5)
Of course, because of some exceptions (what if X+Y>10) you must think about overflow, which adds 1 to first number of solution:
f.e.
11*56=5?6, ?=11, =616
This "trick" known for centuries is just one of many known as Vedic mathematic.
When I get that question i have some standard answers: Use a calculator; I'm not a calculator; I'm not a mathemagician!!
11 * 13 =
13*10 = 110
+
13* 1 = _13
____________
11*13 = 143
Tens place for the win! It makes a lot of math easier.
37*42
(tens place)42*30=(42*10*3)=(420*3) = 1260
(ones place)42*7=(40*7)+(2*&)=280+14= _294
add them together = 1554
I dunno. It's much easier for me to factor down numbers and add them in my head, than doing long multiplication. Even though that's basically what multiplication is.
X-Files 3X20: "Jose Chung's From Outer Space"
http://en.wikipedia.org/wiki/Jose_Chung%27s_From_Outer_Space
"How the hell should I know?" is a running gag in that Episode!