**Mathematical Riddle - 26 January**

Using only two 2's and any combination of mathematical signs, symbols and functions can you make 5?

**For Solution :**Click Here

This Blog is a collection of brain teasers, puzzles (maths,fun,brain etc), riddles,Questions, Quiz.

Using only two 2's and any combination of mathematical signs, symbols and functions can you make 5?

Subscribe to:
Post Comments (Atom)

Difficulty Level 3/5
(674)
Logic Puzzles
(453)
Difficulty Level 4/5
(427)
Riddles
(364)
Difficulty Level 2/5
(346)
Maths Puzzles
(326)
Picture Puzzles
(304)
Trick Teasers
(269)
Popular Puzzles
(203)
Humor Puzzles
(144)
Rebus Puzzles
(144)
Series Puzzles
(118)
Interview Puzzle
(116)
What Word Am I
(95)
Difficulty Level 1/5
(90)
Trivia
(72)
Mystery Puzzles
(71)
Equation Puzzles
(62)
Difficulty level 5/5
(50)
Murder Mystery Puzzles
(43)
Probability Puzzles
(39)
Square Count
(39)
Who Am I
(35)
IAS-EXAMS
(34)
Science Puzzles
(29)
Cipher Puzzles
(28)
Situation Puzzles
(28)
Algebra
(23)
Puzzles of Age
(21)
Read Between Lines Puzzles
(18)
Google Interview Puzzle
(17)
Microsoft Interview Puzzles
(15)
statement
(14)
Time Distance Problem
(13)
MatchSticks-Riddles
(12)
Odd One Out
(12)
Relationship Puzzles
(11)
Story Puzzles
(10)
Cards
(9)
Paradox Puzzles
(8)
Classic
(6)
Best Of 2011
(5)
Directional Puzzles
(5)
clever
(5)
Brain-Twister
(4)
Mind Games
(4)
Analytical
(3)
What Does This Text Mean
(3)
CHALLENGING
(2)
Double Meaning
(2)
Acronym
(1)
Measure
(1)
Suduko
(1)
Video Riddle
(1)
coin-Puzzles
(1)
m
(1)
pop
(1)
triv
(1)

2+2+2/2=5

ReplyDeletethats 4 2's retard look at my answer from june 6 2012 for right answer

Deleteur mean!! you cant talk to people like that!!!

Deleteand its 2+2+2+2+2/2=5

DeleteHe the mean anoymous person u can only use 2 2's

DeleteThere's actuaaly a really simple way of doing it. 2 SQUARED = 4, HALF OF 2 IS 1, 4 + 1 = 5

DeletesEE? sIMPLE!!!

lolololololololololololol

Deletehey two above me...that would still take 4 2's 2(2)+2/2=5

Delete(2/2)+2*2

DeleteOmg you lot are over thinking this EASY riddle! 2+2+1=5

Deleteyuo cant use 1 only 2's

Deleteno .... u can use any thing:):

Deletecause it said U CAN ONLY USE TWO 2SAND ANY MATIMATICAL SIGN FUNCTION OR SYMBOL

Deletethe answer cud be 2+2+6-5 too

Delete2/2 + 2^2

Delete2+2+2+2+2/2=5

DeleteSqrt(.2^ -2) = 5

DeleteHolly :P

PEMDAS. Division First.

Delete2+2+2/2=5

So its

2+2+(2/2)=5

2+2+1=5

Smart one @First comment

rely this is easy 2+2+2+2+2/2=5

DeleteYour are incorrect because you do divison first

Deleteso it is (2+2+2+2+2)/2=5

2 divided by 2= 1

Delete2x2=4

4+1=5

2+2+2/2+2=5

Deleteim in fifth grade and this is easy...

Delete(2+2+2+2+2)/2

The answer is 2+2+1 = 5 it says only using two 2's which I have, doesn't say i can't use any other numbers. They guy up from here who put this is right

Delete2+2+?=5 2 plus 2 plus what gives you 5?

Deleteactually reading your argument there are several ways to get five with just two and any combination of mathematical terms, for example: 2+2+2+2+2/2=5, also: 2/2+2+2=5,

Deleteand: (2+2+2)/2+2=5, so actually you were both correct.

You are all over thinking this! it states 'you can only use two 2's'

Delete2+2 (both 2's used) = 4.

Now that you have used both two's you simply go plus 1.

2+2+1=5.

in that equation, only two 2's are used.

2+2+i^4

Delete2÷2+2+2=5 duh!

Delete2+2+2/2=3 not 5

Delete2+2x2+2=10 divided by 2 = 5

Deletethats 3 jack its 2+2+2+2+2/2=5

DeleteNo 2+2+2/2=5 cause you fallow pemdas so 2/2=1 so it would be 2+2+1=5

DeleteIt's 2+2+2/2=5 because of PEMDAS. So first you do 2/2=1 because division comes before addition in PEMDAS. So now you technically have 2+2+1 which is 5.

DeleteThis Is actually easy.... The answer is sqrt(2^-2

Deletelisten up b*tch assss hoe motha f*cka, i talk however the f*ck i want ya c*nt ass bitch motha f*cka

Delete2*2 + 2/2 = 5

ReplyDeleteremember that time when the question said USE TWO 2s

DeleteThats three twos, squared doesnt count as a 2 because its a mathmatical function

Deletethe correct answer is:

DeleteNO!

the question is if you CAN make it but you cant!

everyone is over thinking it you have to really read it carefully!

Actually you can. It's quite simple, really. Written out the answer is as follows: SQRT (.2 ^ -2)=5

DeleteIn simple terms you take .2 to the power of -2 which equals 25 then your answer is the square root of that which is 5

2*2 + log(e) = 5; where e is eulers number.

ReplyDeletelog(e)/.2 = 5;

2^2 + 2/2 = 5

ReplyDeleteAndy

four 2's so you're wrong and you just copied someone else..

Deleteyour being really mean...please dont talk to people like that.thank you.

DeleteThis comment has been removed by a blog administrator.

Deletethe answer is 2/2+4=5

Delete2^2 + 2/2 = 5

ReplyDeleteAndy

(.2 ^ -2)

Delete:\

.2 just means 0.2, it isn't actually a function rather a short way of righting/typing 0.2. I don't know why the answer says to be honest...

Delete*writing. My bad :p

Delete(2+2+2+2+2)/2 = 5

ReplyDelete{[(2+2)*2]+2}/2 = 5

ReplyDelete(2+2)+(&/&) &=infinity sign

ReplyDeleteinfinity is not a "mathematical" sign, function, or symbol...

Deletethe infinity SIGN is!:):

DeleteAnd &/& is not always 1! can be 0, 1, or & or whatever you want ... even undefined!

Deleteanything divided by itself does equal one so a correct answer could be 2+2+X/X=5

DeleteSquare root ((.2)^(-2))

ReplyDelete1/5 and negative two are not 2

DeleteNo...he got it right.

Deleteno he didnt got it it 25 still not 5 :P

Delete.2 is just short for 0.2

DeleteActually Nadir Usaf he is indeed correct. He put Square Root in his equation so his answer is actually the square root of 25 which is indeed 5 last I checked

DeleteNasir**

Delete(2*2)-(2/2)+2

ReplyDeletesq.root of(2+2)! , using the greatest integer function

ReplyDeletewhere ! means factorial

4! is 24.

Deleteonly 2 answers correct..which part of only two 2's do people not understand?

ReplyDelete@admin

ReplyDeleteis my answer correct???

(22 - 2)/(2 x 2)

ReplyDeleteOR (2+2)+(2/2)

ReplyDeleteThe correct ans shud b yes bcoz de hv asked 2hether. Can make it nor ot

ReplyDelete2+2+2+2+2/2=5

ReplyDeleteu guys make it so complicated just do

ReplyDelete(2/2)+2+2=5

you can only use "two 2's" moron

DeleteYo dude chill with the insults seriously.

Deleteya what he said!!! if you dont like what people are saying either tell them politely or just get off.

DeleteThis comment has been removed by a blog administrator.

Delete2/2+2+2

ReplyDeleteits NOT the answer.. its been posted 10 times.. and you're stupid

Deletedude you really gotta take a chill pill

Delete(2+2) + "the minus sign - turned vertical to make it a one...

ReplyDelete& this guy is a non-certified genius!!!

Deletethats not nice... i dont know what your problems are but dont take it out on these innocent people!

Delete2*2*2+2/2=5

ReplyDelete2.5+2.5 OR 2.5X2

ReplyDelete(2.5X3)-2.5

ReplyDelete2+2+one=5

ReplyDelete2+2+1=5

ReplyDeleteafter all you said use only 2 two's , you didnt say dont use other numbers

:0

p.s. and Anonymous insulting freak stop being mean to people , come on lets see if u know the answer , go on tell us the answer , if ur the smart guy around here!!!!!!!!!!!!

ONLY TWO 2's are given.

Deleteplease stop getting imaginary numbers from your mind to get the answer 5...

i think (.2 ^ -2)

ReplyDeleteno thats incorrect, but...... HEY!! if you

Deletetake the square root of (.2 ^ -2) = 5 !!!!!!!!

GOOD JOB DUDE!!!!

(2+2+2+2+2)/2=5

ReplyDeletehow can you get it wrong!

I thought you were only aloud to use two 2's though... I'm a little confused ._.

Deleteusing c/c++ operator it should be..

ReplyDelete++(2+2)

or (2+2)++

hey dude i dont no the correct ans so plzzz say me the ans................... :D

ReplyDeleteSQRT(.2 ^ -2)

DeleteTake .2 and raise it to the power of -2 and then take the square root.

hehehe It still 25 not 5 :P

DeleteSQUARE ROOT!!!!!

DeleteThe dot in .2 isn't a function, its just short for writing/typing 0.2

DeleteThis is my way, which is quite easy actually. 2 squared is 4, half of 2 is 1, 4 add 1 = 5. See????

ReplyDeleteceiling(sqrt(22)) = 5

ReplyDeleteGood answer!

DeleteWow how are people missing (2*2)+ (2/2) = 5

ReplyDelete.... its clearly 2^2+1...

ReplyDeleteThere are many combinations using multiple numbers (2^2 + (2/2) using 3 or 4 numbers, depending on how you're counting them). I can only think of 2 + 2 = 4 having 5 symbols.

ReplyDeleteactually many people are confused here regarding the no. of 2

ReplyDeletewe can only use the numeral 2 twice .......

my answer is square root of 22 and then placing the value in least integer function

maths guys know what least integer function is and for other people plz google the term for clarity!!

and in the question it is given that we can use functions too!!

and feel free to correct me if i am wrong!!! :-)

solution :

DeleteSQRT(.2 ^ -2)

Take .2 and raise it to the power of -2 and then take the square root.

hey fool thats .2 not 2....

DeleteAnd a '.' is a Mathematical symbol. YOU fool. read the question bell-end

DeleteA . isn't a function, it just means its 0.2 not 2.....

Deleteeasy its 2+2+?=5 make it an equation...

ReplyDeleteyou're gonna PROVE that two 2's become 5.

Delete2+2+n^(n-n) = 5

ReplyDelete2+2+n^(n-n) = 2+2+N^0 = 2+2+1 = 5 .. because any no. that has exponent is 0 is equal to 1 :)

Deleterodolf rimando .. :)

Deleteno you can't. 0 is not given.

Delete2+2+2+2+2=10/2=5

ReplyDeleteThis comment has been removed by the author.

ReplyDelete(2+2+2)/2 + 2 = 5

ReplyDeleteEasy 2•2+2-2/2.

ReplyDeleteClearer: 2 x 2 equals four

4+2 equals six

2/2 equals one

6-1 equals 5!

Oh only two twos then 2^2 + 2^-1

ReplyDelete2•2+x, invisible one but it might also get you 4x.

ReplyDelete(2+2+2+2+2)/2

ReplyDeleteok here it goes:

ReplyDeletea, (((2*2)+2)/2)+2=5

b, ((2+2+2)/2)+2=5

c, (2+2+2+2+2)/2=5 the most direct

multiply by an odd number to get an od result.

ASCII

ReplyDelete2+2+pi/pi=5

ReplyDeleteIts not hard it took me 2 minutes

ReplyDeletesquare root(0.2^-2)

2 Squared + 2x.5=5

ReplyDeleteI wonder y people are saying 4 2's and such. Not many ppl figured it out "_

ReplyDeleteHow do you do it?!?!?

ReplyDeleteint(tan(2)/cos(2))

ReplyDelete2!+2=5 !=factorial

ReplyDelete1+2+2=5

2factorial+2

factorial means to add every number to the number you factorise e.g. 2!=1+2

sorry but factorial is means to multiple all the numbers up to that number. for example: 5!=5*4*3*2*1=120 and 2!=1

DeleteA complex way could be -

ReplyDelete|[-(e^2 - 2)]|

where [] represents greatest integer function.

and | | means modulus.

0. there r 0 ways.

ReplyDeletei meant zero.

Deleteor one. it doesnt ask what.

2squared plus the square root of 2

Delete2 square x 2 + 2 / 2 = 5

ReplyDeleteI think my answer is more creative. it is: 2^2-e^(i*pi)=5

ReplyDeleteI think your answer is the only correct one lol, because .2 is just short-hand for 0.2, which isn't technically the no. 2

DeleteSo hats off to you :)

5-2+2=5

ReplyDeleteSqrt(.2^ -2) =5

ReplyDeleteHolly :P

Sqrt(.2^ -2) =5

ReplyDeleteHolly :P

2^2 + 2^0

ReplyDelete3 twos :(.

Delete2+2+2+2+2/2=5

ReplyDeletei believe you said use only two 2's and blar.. blar.. blar... mathematical symbols. Now I am probably incorrect but is a symbol another word for a number. Probably not but worth a try.

ReplyDeleteSo 2+2+1= 5.

Do not have a go at me if I am wrong after all I am only 12

The answer to this riddle "yes". Is does not ask you "how many 2's" or to write it out. It's a simple "yes" or "no".

ReplyDeleteAnd yes I realise that this is not the author's answer. The author did not ask the question correctly.

DeleteThis is mostlikely cheating but meh...

ReplyDelete2X=2

X+X+X+X+X=?

2.2x2.2=4.84 which would be rounded up to 5

ReplyDelete2+2≈5

ReplyDeletehaha :D

Deletewhat about int(sqrt((2+2)!))) ?

ReplyDeletewhere int means "nearest integer" or "round" and can be replaced by symbols which I'm too lazy to type (and qsrt means, of course, square root, same story for symbol!)

2+2+1 is one of the many correct answers because it says that you can use two two's not "you can't use one"

ReplyDeleteYou can ONLY use two twos....

Deletei hate math.

ReplyDelete2 Square + 2^0 = 4+1 = 5

ReplyDelete22-2=20/2=10/2=5 thats the ans needed

ReplyDelete2+2≠5

ReplyDelete2/2+2+2=5

ReplyDeleteOnly ONE person before me put this, so (2^2)+(2^0) = 5

ReplyDeleteAlso, (2+2)+(pi/pi)=5 & (2^2)+(pi/pi)=5

OR, (2+2)+(x/x)=5... where x is any REAL integer other than 0.

Also using ONLY ONE #2, Inverse of .2 -> .2^-1=5

Using NO 2s... (pi/pi)+(pi/pi)+(pi/pi)+(pi/pi)+(pi/pi)=5

IF you will stand by the nonsense of 'Oh but "^2" (squaring) is considered a 2!!' Then you're better off mentioning that there's a 0 in "^0". Also realize that taking the sqrt of something 'simply means' to take it to the power of .5 ( sqrt(2) = 2^(1/2) = 2^.5 ) and that 'multiplication' is 'simply' short for adding a number to itself an x amount of times (1*3 = 1+1+1).

If you're not math savvy, then stay literal with 'It's a yes or no question to see if YOU have an answer' and just say NO. Too many wannabe smart-asses thinking they're being clever when they just don't understand basic and simple math concepts.

INVERSE, SQUARING, SQRT, & EXPONENTIALS ARE FUNCTIONS!

DECIMALS AND PI ARE SYMBOLS! So all of these OBVIOUSLY fall within the confines of this riddle.

2+2+(2/2)=5

ReplyDeleteits so easy guys.... you guys are dorks. its obviously 2+c over w = m+2 over q -himps =5,,, jk 2+2+?=5 is it that hard?

ReplyDeleteIt's possible to do it like this:

ReplyDelete(((Ï€ + Ï€ + Ï€ + Ï€ + Ï€)x2)/Ï€)/2

= 5

2 to the 5th power divide by 2

ReplyDeletewhat about 2.5+2.5=5

ReplyDelete2+2≠5.

ReplyDeleteDone.

log to the base of pi of pi(=1) + 2 + 2

ReplyDeleteyou guys r pathetic it's 2 squared DUHHHHH plus half of 2

ReplyDeleteYou are all over thinking this! it states 'you can only use two 2's'

ReplyDelete2+2 (both 2's used) = 4.

Now that you have used both two's you simply go plus 1.

2+2+1=5.

in that equation, only two 2's are used.

Also - it really bothers me that there are so many people that commented say 'this is easy' then they say '2+2+2+2+2/2' because NO THAT IS USING 6 2's NOT 2!

Ok, i'm done now :)

Wow, so many wrong answers and not reading the question properly.

ReplyDeleteIt clearly state: "Using only two 2's" So not three 2's, just 2.

And yes, squared does count as a 2.

So here you are Squareroot(0.2^-2)

= Squareroot(1/0.04)

= Squareroot(25)

= 5.

- And good day to you!

People are putting

ReplyDelete2+2+2+2+2/2=5, but isn't

2+2*2+2/2=5 less moves? :)

2+2+2+2+2*2=5

ReplyDeleteAlmost all of you use .2 as 0,2, which is not the same, or e or pi as a symbol and not a number. My answer is for example lim n-> 2 of (n+n+n+n+n)/2 = 5 or with Latex \lim_{n \to 2} (n+n+n+n+n)/2 = 5

ReplyDeleteSQRT(.2 ^ -2), Duh

ReplyDeleteits (2+2+2+2+2)/2

ReplyDeleteit is 0.2 / 0.2^2 (square sign isn't a 2)

ReplyDelete= 0.2 / 0.04 = 5

2+2!=5

ReplyDelete(2!=3)

(2!=1+2)

(n!=1+2+3+4+5+.....+n)

so simple

2cubed - the sqaure root of 2

ReplyDelete2 x (2 + ln (√e))

ReplyDeletesquare root(0.2^-2)

ReplyDeleteIt said any combination of mathematical signs, symbols and functions so .2 and -2 can be used

2^(2-2)+2^(2-2)+2^(2-2)+2^(2-2)+2^(2-2)

ReplyDelete(2/2)+2+2=5

ReplyDeleteexplanation:

2/2=1 and 2+2=4 and 4+1=5

2+2+2+2+2=10 then divide 10 by 2 and get 5. I AM ONLY 12 PEOPLE!!!!!!!!!!!!!!!!!!!

ReplyDeleteonly two 2s

Delete1/sqrt(2%2) =5

ReplyDelete2%2 meaning 2 percent of 2.

2+2-i*i

ReplyDeleteI don't really like using .2 for 0.2, so here is an another solution:

ReplyDelete⌈√(2²!)⌉

(Explanation: 2² is 4. The factorial of 4 is 24 (4·3·2·1). The squareroot of that is a little less than five and the ceiling function changes this number to the next integer, which is 5)

(2^2)++ = 5

ReplyDelete++ moves the number to the next integer. Computer Programing.

..so?

ReplyDeleteSQRT kang (0.2 ^ -2) po

ReplyDelete-bam

2+2+x=5 in math a variable with no number ex.5x automaticaly equals one so 2+2+x=5

ReplyDelete=.2*.2

ReplyDelete=(2/10)*(2/10)

=(1/5)*(1/5)

=(1/25)^-1

=sqrt(25)

=5

is this one fine???????????????

nope it's like this

ReplyDeletea=2 ,b=2

a+b+b/(a/a)=5

no should be minus

Deletelike this

a+b+b - (a/a)

2+2+2+2+2, / 2

ReplyDelete2+2=4 divide by two to get one then 2+2+1=5

ReplyDelete