Braingle: '8 + 8 = 91?' Brain Teaser

8 + 8 = 91?

Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.

Puzzle ID:	#1847
Fun:	(3.04)
Difficulty:	(1.45)
Category:	Trick
Submitted By:	missie
Corrected By:	Crazycriely

How can you make the following equation correct without changing it at all?

8 + 8 = 91

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Comments

ChemicalBoy08 Jan 20, 2002	Hats off to missie
Rosej0 Feb 02, 2002	very clever
tell-UN-igent Mar 20, 2002	My compliments to missie...good one!
O_wise_one May 22, 2002	Good one, but too easy.
angie Jun 03, 2002	I didn't look at 16= 8+8 so I really did try to look at it upside down!
ymiroc Jun 13, 2002	very clever. But are you not, as a technical matter, "changing" the equation when you turn it upside down?
odcsurferchick Jun 21, 2002	LOL! FUNNY! I DONT KNOW Y I AM USING CAPS! HEEHEE
NotSoLilGeorge Jul 13, 2002	surfer chick, have you gone to your personal physciatrist (however you spell that)
kiwioz9 Aug 22, 2002	ymiroc, you're not turning it upside down, you're just LOOKING at it upside down, so therefore not changing the equation. Nice teaser.
jimbo Mar 02, 2003	Yes but when I turned it upside down I dropped the monitor and now I can only get 253 colours!
xiaobaby Aug 27, 2003	clever and funny i like it =)
catsclutter Oct 22, 2003	very clever! I think some of the other comment leavers need medication, but the teaser was really neat!!!
nuccha Feb 26, 2005	neat. easy. but who cares. i had fun turning my head upside-down.
deadeye823 May 31, 2005	niceeeeee
jannie_delta Jul 20, 2005	it doesn't work if you've got the tail on the one thought... Nice one.
peapod826 Sep 24, 2005	Ahh, yet another sneaky teaser, and a very good one, i liked that one, im adding it to my favorites, keep those little suckers comin;..
boodler Jan 20, 2006	Man in charge of row-boats "Come in, 91, your time is up. Come in, 91. Come in, 91.....Are you in trouble, 16?"
SPUTNIK2 Feb 15, 2006	cute
Crazycriely Jul 12, 2006	lol i liked it!
cccc Aug 08, 2006	Wow. I thought you turned the addition sign around for 8X8=91. It's technically not changing anything, because it's the same sign.
coltonr1 Apr 11, 2007	Wow that was really good! ~Coltonr1~
GrandmaB Aug 27, 2007	Got it really fast. Had been hoping for a stickler.
scallio Aug 27, 2007	Cute and clever... I found it a bit easy, but apparently not everyone did. Great teaser!
Chellie1911 Aug 27, 2007	WOO - I got that as soon as i saw it XD - i was hopeingit would be the ones that add up weird tho
Hadleigh Aug 27, 2007	That was very clever
SweetPotato Aug 27, 2007	For cccc: 8x8=64
bradon182001 Aug 27, 2007	Good trick teaser.You tricked me.
AuthenticallyMe Aug 27, 2007	I thought it would be to turn the "=" sign around so it looked like a multiplication sign. I figured that I wasn't changing it, but merely reorienting the characters in the equation...turns out your answer was better and more clever! At least I was thinking about rotating the [part of] equation to get my answer...
rimfire Aug 27, 2007	very nice one in deed.made me think..
doehead Aug 27, 2007	I must have my head on upside down.Had the answer in about 5 seconds.
fallenangel82 Aug 27, 2007	Great Teaser!
raejg Aug 27, 2007	I got it...yay me.
phyllisa Aug 27, 2007	Good one and I got it
lilredc5 Aug 27, 2007	simple, easy, and amusing. At first glance I thought 'come on, you have to change it at least little, even if the change is miniscule. But no I was wrong, don't need to change the equation, just need to change the reader of the equation. Hang from the ceiling perhaps.
mi2mo2tx Aug 27, 2007	VERY VERY clever! Got me! Thanks,
buckeyechris Aug 27, 2007	Very clever but in fact you do change it when you look at it upside down. Utilizing that particular font, you have to flip the 1 around when you look at it upside down. Not to be negative but I was just using your rules to evaluate the problem and when I did that I got a 6 preceded by a figure that sort of looked like a 1 when viewed upside down.
FatHead Aug 27, 2007	At first I thought (s)he was lying, but I was wrong!
buckeyechris Aug 27, 2007	If you would have used the font, "Gill Sans MT Condensed" , then I agree with you otherwise I'm not in complete agreement with the answer.
locutus13ds Aug 27, 2007	OIC Upside down Huhhh
2ndhandrose Aug 27, 2007	HI I just turned the 91 upside down and got 8 + 8 + 16. Why turn the whole thing over Dunno. I believe this is also correct unless I need another Tea. Someone let me know if I'm wrong. THIS IS HOW TO SPELL "phsyciatrist" whoever was rude & asked. Rose
2ndhandrose Aug 27, 2007	Rose again Sorry, I made a typo. Turn the 91 upside down and it becomes 8 + 8 = 16. not plus 16. Sorry OOPS
luckypuppy Aug 27, 2007	Got it. That was cute, thanks
UptheHill Aug 27, 2007	Too cute, thanks alot!
Dreamchaser Aug 27, 2007	too cute, thanks!
Waluigi Aug 27, 2007	this was a fun one.
auntiesis Aug 27, 2007	After I stood on my head and the blood rushed to my brain the answer made perfect sense. Loved this one, keep them coming. Thanks.
Fredonia2k Aug 27, 2007	If you only rotate the 91, then you're changing part of the equation, which would be against the rules.
air_up_there_jr Aug 27, 2007	that was cool. good job
kirstydh Aug 27, 2007	good one!! today was my first day of middle school and i have had problems like that before in elementary school so it was kinda easy... but it was really good!!!
snowmonster Aug 27, 2007	This was very cute!
POPS Aug 27, 2007	It jumped right out at me as soon as I saw it,CUTE and easy (for me anyway)
bestgirl Aug 27, 2007	Wouldn't it be more accurate to say "read it backwards??" But no biggie.
bjrafidi Aug 27, 2007	that's funny!!!
BikerDank Aug 27, 2007	Pretty easy but fun! "phsyciatrist" is spelled "psychiatrist" Funny joke boodler!
jabdr Aug 27, 2007	This one had me laughing literally, out loud It was so "GOTCHA"! Thanks for Getting Me
Hungrygit Aug 27, 2007	You can't just 'turn' the 91 upside down, because that is changing the equation. 'Looking' at the whole equation upside down doesn't change what is writenn and keeps the equation intact (even though, technically, it's a different equation). I liked this one. If I bothered with favourites, this would be added to them,
Candygirl415 Aug 27, 2007	I got in a sec. just figured 8+8=16 so how do i get 16 out of 91... oh! it's upside down...lol
DewlannaSolo Aug 27, 2007	easy. especially late at night when my mind turns things upside down any way.
suganue Aug 28, 2007	I love it, I love it, I love it!!!!!!
Yorkshire-Boy Aug 28, 2007	ingenious. nuff said!
jennsingergirl Aug 28, 2007	Your instructions are incorrect. They need to say "How can you make the following equation correct without changing the numbers or symbols?" By flipping it over, you actually are changing it, so my suggestion would make your teaser more accurate.
mondayschild59 Aug 28, 2007	I got it right!!!!! That was a great teaser. I liked it alot. Thanks for the post. monday~
ikramazeem Aug 29, 2007	Hello everyone, It is after many days that i got a riddle correct. Ha hA. ikramazeem@hotmail.com
speedqueenkmw Aug 29, 2007	never would have thought of that!
vlerma Sep 08, 2007	Cleaver trick
lavender Sep 16, 2007	I was thinking 91 being 16 upside down but I didn't think about the whole thing being upside down! Fun teaser!
stephiesd Apr 19, 2008	Ha! That was AWESOME!
gottalovetacsc Sep 13, 2008	WOW!
quizwizAhn Oct 21, 2009	Reeeeeeeeeaaaaaaal Easy!!
beyonce123 Jun 03, 2010	ymiroc: You are not changing the position of the equation, you are changing the position of your head. Or if you have a laptop like me u can turn your computer upside down.
peachpants Jun 03, 2010	Oh wow! That was really clever! I never thought of that! Excellent!!!
Coolnine9 Jul 27, 2010	This is on the imbecile test on iPhone! You can get it for free!
crocodile Aug 27, 2010	... But you changed it... By turning it upside down... Anyway, I still liked it a lot!
willymapo Aug 27, 2010	Ok. For those that claim that turning the equation upside down is changing it, then try to read it hanging upside down. That way the one that changes is me!
kwelchans Aug 27, 2010	How about this: Stand on your head. That way, your not changing the position of the equation in any way, only the position of yourself!
juju1946 Aug 27, 2010	Boy, some of you sure get caught up in the semantics. Cute, but very easy. Liked it.
davidrools Aug 27, 2010	No, it's still wrong, just upside down. It still says 8+8=91, unless you changed something ;). Still fun though!
yash23 Aug 30, 2010	I was thinking, that the you should just pretend that it is correct and move on...
braingle100 Feb 28, 2012	I thought the answer was 'no'.