Brain Teaser for all

Fullers Farmalls · Feb 15, 2015

1+1=?
2+2=?
half of 2+2=?

I'll post the answers at 820pm

LonM · Feb 15, 2015

2
4
3

DENNIS MIN · Feb 15, 2015

Three?

Maybe I don't have the order of arithmetic right.

D.

Funtwohunt · Feb 15, 2015

1+1=2
2+2=4
half of 2+2=3

gtractorfan · Feb 15, 2015

Half of 2+2 (which equals 4)--- why wouldn't it be 2?

john in la · Feb 15, 2015

Half of 2 is 1 + 2 = 3

bill mart · Feb 15, 2015

all in the way you read the third one. Bill

SweetFeet · Feb 15, 2015

1+1=2
2+2=4

Answer 2 + Answer 2 = 8...divided by 2 = 4.

Fullers Farmalls · Feb 15, 2015

Several got it right. 2, 4, 3. I heard this the other day and was really puzzling it over. I never got it till someone told me the answer. So I am not the brightest bulb in the box either.

Now who can tell me why a man hole cover is round?

larry@stinescorner · Feb 15, 2015

so the lid cannot fall in?

Fullers Farmalls · Feb 15, 2015

Yeah. Thats an engineering interview question. But its the only shape that can't fall in on itself.

wolfman · Feb 15, 2015

Multiplication (of means times) takes precedence over addition.

Funtwohunt · Feb 15, 2015

another one, you go to a sale with $100.00. Horses are $10 each, hogs are $2.50 each and chickens are .50 cents each. You have to buy some of each type of animal. You have to buy exactly 100 animals and spend exactly $100. How many of each do you buy?

JayinNY · Feb 15, 2015

I hate math and could not figure that out in the terms you posted it, but Wolfman pointed out how to figure it out.,maybe it's simple for others but I'm no good at all with math. Good post none the less. My brother is very good in math I asked him I'll see if he can figure it out! Lol

Duner Wi · Feb 15, 2015

90 C
5 H
2 pigs

Greg1959 · Feb 15, 2015

That is like asking...What is 11 + 3?

Answer is 2.

The question was not posed with the relevant information......

11 A.M. + 3 hours = 2 P.M.

JayinNY · Feb 15, 2015

Wait a minute I was wrong Wolfman is wrong half of two is not multiplication it's division? Right?

Lyndon - AB · Feb 15, 2015

(quoted from post at 18:05:33 02/15/15) 1+1=?
2+2=?
half of 2+2=?

I'll post the answers at 820pm

1+1=11
2+2=IH 3588, 3788, 6388, 6588, 6788
half of 2+2=serious he!! to pay for breaking the tractor!

My 2 cents CDN :roll:

Greg1959 · Feb 15, 2015

Okay, I get it.

Half of 2 + 2 = ?

Half of 2 = 1, 1 + 2 = 3.

Ignore the first two equations.

JayinNY · Feb 15, 2015

But have you ever used that in every day life? I never have I think it's just a trick question! I asked Siri on my iPhone and she could not even figure it out! Lol haha

Duner Wi · Feb 15, 2015

Correction
5 Horses
1 Pig
94 chickens

john in la · Feb 15, 2015

Of in math terms means multiply
Multiply always takes precedent (do first) over adding

So
1/2 x 2 = 1
1 + 2 = 3

john in la · Feb 15, 2015

Or to draw it out some

Half of 2+2=

Half is 1/2
Of is times

1/2 x 2 = 2/2

2/2 = 1

1 + 2 = 3

JayinNY · Feb 15, 2015

Wow that is really weird I still think half of two is one that makes it division. Not multiplication.
But I'm no good in math and you learn something new every day! Lol

john in la · Feb 15, 2015

1/2 divided by 2 would be 1/4

If you have half a pizza and you divide it into 2 you would have 2 quarter pieces

If you have a 1/2 a pizza and multiply it into 2 half a pizzas you would have 1 whole pizza.

So
1/2 x 2 = 1
and
1/2 divided by 2 = 1/4

paul · Feb 16, 2015

Yup, need to put in the ( ) to make a proper equation.

Good one tho to make a person think.

Paul

centash · Feb 16, 2015

Fisherman story----3 fishermen rent rooms at a lodge for $10 each (OK it was a long time ago...) So $30 total. Lodge owner wants their repeat business, so he gives the busboy $5 and tells him to give it to the fishermen as a goodwill gesture. Busboy goes up to the rooms but thinks "how am I going to split $5 between 3 fishermen?...I know...I will give each of them $1 and keep the extra $2 as a tip!" So, doing the math---fishermen paid $9 for each room ($10 less the $1 from the busboy) for a toal of $27. Busboy has the $2 tip in his pocket---$27 plus $2 equals $29....where did the other dollar go?

Ben

Ron Muhlenkamp · Feb 16, 2015

27 - 2 = 25 received by owner

Rich'sToys · Feb 16, 2015

(quoted from post at 08:34:14 02/16/15) Fisherman story----3 fishermen rent rooms at a lodge for $10 each (OK it was a long time ago...) So $30 total. Lodge owner wants their repeat business, so he gives the busboy $5 and tells him to give it to the fishermen as a goodwill gesture. Busboy goes up to the rooms but thinks "how am I going to split $5 between 3 fishermen?...I know...I will give each of them $1 and keep the extra $2 as a tip!" So, doing the math---fishermen paid $9 for each room ($10 less the $1 from the busboy) for a toal of $27. Busboy has the $2 tip in his pocket---$27 plus $2 equals $29....where did the other dollar go?

Ben

The money is all there. The question is not phrased properly.

The room originally cost $30. Owner refunded $5. Room now cost $25.
So $25 that they paid, plus $3 they were refunded =$28, plus the $2 the busboy stole = $30. All the money is accounted for.

Or to put it another way--each guy paid $9 for a total of $27. Room only cost $25. Where did the [u:9a5b43c179]$2[/u:9a5b43c179] go? The busboy stole it!

centash · Feb 16, 2015

It comes down to the order in which the math is done, similar to the OP's question. Without brackets or an order of operation, a simple math question can have several answers--just like the '1/2 of 2 +2' question. If you developed an equation for the fisherman puzzle, you will get the right answer if the sequence of operation is done properly.

Another simple teaser---how much dirt is in a post hole 3 feet deep by 1.5 feet in diameter??

Rich'sToys · Feb 16, 2015

Another simple teaser---how much dirt is in a post hole 3 feet deep by 1.5 feet in diameter??

None!

centash · Feb 16, 2015

Right!!

centash · Feb 16, 2015

When does one take away one equal two?

Mike N Mo · Feb 16, 2015

90 chickens @ $.50=$45
6 pigs@$2.5=$15
4 horses@$10=$40

john in la · Feb 16, 2015

"Without brackets or an order of operation, a simple math question can have several answers"

But he did use brackets if you know math terms.
He just used words instead of signs.

Half of 2 + 2 = ?

Half is 1/2
Of in math terms means times
You always do multiplication first in absents of brackets.
So......

1/2 x 2 + 2 = ?

1/2 x 2 = 1

1 + 2 = 3

I tried to explain it below using pizza.
If you have half of 2 pizzas and (+) 2 pizzas you really got 3 pizzas.

oldtanker · Feb 16, 2015

(quoted from post at 08:44:12 02/16/15)

Another simple teaser---how much dirt is in a post hole 3 feet deep by 1.5 feet in diameter??

none

rick

centash · Feb 16, 2015

Maybe should read..."Half of 2, plus 2" ??Placement of commas can change the meaning of a sentence too.

Funtwohunt · Feb 16, 2015

you are correct 90 chicks $45 6 hogs $15 and 4 horses $40

T in NE · Feb 17, 2015

They can be the difference between helping your uncle Jack and committing bestiality as well.

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