# Brainteaser Month on January, 2023: I need some help with this brainteaser. 22 = GP of an E (m)?

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22 = the GESTATION PERIOD of an ELEPHANT (in MONTHS)

The gestation period of a mammal is the time it spends in its mother's uterus (from conception to birth).

Math brainteaser help (99+9=9...)?

it seams to be german word qestion Professor Nova, in the summer of 1798 invented a famous puzzle which goes like this...

99 + 9 = 9 ?

A trick of mind called "The Word Puzzle". The hint is one word "Right". Therefore it is a question and the answer in one word is WRONG.

Anonymous said...

99 is a variable, like "x", only it's value is 0.

December 24, 2007 9:58 AM

Sam Raven2 said...

The tital gives the hint. Why would it be called word puzzle when it involves only numbers?

December 24, 2007 10:33 AM

Anonymous said...

99 + 9 = 9 ?

If you rewrite this...

99 is 9 * 11

9 is 9 * 1

Therefore,

9 * 11 + 9 * 1 = 9 ?

- 9 * (11 + 1) = 9 ?

- 9 * 12 = 9 ?

- ? = * 12

December 24, 2007 10:41 AM

Anonymous said...

The answer is obviously 'I'

Assuming any base 20 or higher.

example 99+9 base 20 =198 (189+9)

198 dec to base 20 is 9I

December 24, 2007 11:27 AM

Anonymous said...

i think you're all on crack but i don't have any answers so, carry on

December 24, 2007 12:18 PM

Anonymous said...

well if pi +3.14159265358979323846264339502884 the

therefore 9-99=98= +_8x to the 9th

times pi plus using the quadratic formula

and pythagoream theorem then the answer is 67.45258 See that was easy

December 24, 2007 1:52 PM

Krystal said...

the answer is no. It is aking you if 99+9=9?

the answer is no...

there you go

December 24, 2007 3:52 PM

Daniel said...

Merry Christmas everyone! I got nothin for this one, sorry.

December 25, 2007 2:04 AM

mr tyler said...

as a word problem...nine is german for zero and therefor makes

nine nine+nine=nine

zero zero+zero=zero

00+0=0 true!

its in german

December 25, 2007 5:58 AM

diverdave said...

The answer is NO! it is a question.

December 25, 2007 7:45 AM

Anonymous said...

99+9=9+99

December 25, 2007 7:54 AM

Lakshmi said...

that was so brave of daniel, its easy to say, i never saw the question than to come up and say i couldn't find any answer

December 25, 2007 10:51 AM

Anonymous said...

99 + 9 = 108

1 + 0 + 8 = 9

December 25, 2007 2:42 PM

louey said...

Merry xmas ! You dudes are great ! Im still stumped on this one... ah well !

:)

December 27, 2007 3:25 AM

Clay said...

my first thought was that 99+9=108

1+0+8=9

December 27, 2007 12:57 PM

Druail said...

no, The way it looks it's asking if 99+9=9. I hope we all know what the sum of 99 and 9 are.

December 28, 2007 5:41 AM

Sir said...

Im not sure about this question, but I like the german idea :)

The way i thought about it, because of the clue with the year was that the numbers represented a passage of time.

so I said 99 days takes us to the 9th of april, and nine months takes us up nine months to january, which will be in 1799

I dont think its right, but it was an idea

December 28, 2007 1:43 PM

Sir said...

ok, maybe the ? can be treated like a variable, so the answer is ? = 12. dunno, bit of a vague puzzle, probably with an ingenious solution

December 28, 2007 2:09 PM

hairy.hippo.nuts said...

To all you who thought it was a question. Which I did when i first read it. I'm sorry (not really) to tell you but it is not.

A question may be either a linguistic expression used to make a request for information, or else the request itself made by such an expression. This information is provided with an answer.

Questions are normally put or asked using interrogative sentences. But they can also be put by imperative sentences, such as "Tell me what 2 + 2 is." not

Not: 99+9+9?, as it is incomplete.

I'm sure if Professor Nova wanted his problem to be a question he would have asked a question.

>> " Anonymous said...

well if pi +3.14159265358979323846264339502884 the

therefore 9-99=98= +_8x to the 9th

times pi plus using the quadratic formula

and pythagoream theorem then the answer is 67.45258 See that was easy

December 24, 2007 1:52 PM " <<

^^^

lol That was a good one.

December 28, 2007 2:51 PM

midnight tulip said...

A trick of mind called "The Word Puzzle". The hint is one word "Right". Therefore it is a question and the answer in one word is WRONG.

December 28, 2007 4:12 PM

hairy.hippo.nuts said...

i thought it was left

December 28, 2007 4:39 PM

Anonymous said...

Right. Means Go To The Right So 9&9=99

December 29, 2007 9:59 AM

ATM said...

99 9/9

December 29, 2007 1:48 PM

Anonymous said...

99+9=9?

my answer is 999

December 29, 2007 9:43 PM

Smartman101 said...

right is the hint. Square root = 9

December 30, 2007 7:17 PM

Anonymous said...

Remember people this is a word problem. All I see is math, ewwww! So I'm gonna bet on the german idea; its so cool. Does anyone know if prof. Nova was german?

December 31, 2007 9:32 AM

jy said...

99+9=9

99+9=108

1+0+8=9

January 1, 2008 4:43 AM

Darryl said...

To all who arrived at the 1+0+8=9 solution: the sum of the

can you answer my brainteasers??? (they are hard)?

1. Do they have a fourth of July in England?

Yes - they just don't celebrate it the same way as the USA

2. How many birth days does the average man have?

1

3. Some months have 31 days; how many have 28?

All of them

4. In baseball, how many outs are there in an inning?

I know nothing about baseball lol. Don't have it in the UK!

5. Can a California man legally marry his widow's sister?

Well that would make him dead if he had a widow

6. Divide 30 by 1/2 and add 10. What is the answer?

30

7. If there are 3 apples and you take away 2, how many do you have?

2

8. A doctor gives you three pills telling you to take one every half hour.

How many minutes would the pills last?

1 1/2 hours?

9. A farmer has 17 sheep standing in a field and all but 9 drop down and die.

How many sheep are left standing?

9

10. How many members of each animal did Moses take on the ark?

None - Noah took 2

11. A clerk in the butcher shop is 5' 10'' tall. What does he weigh?

Meat!

12. How many two cent stamps are there in a dozen?

12