₦airaland Forum

oladapo_a1: -1000 + 40 + 1000 + 30 + 20 + 1000 + 10 + 1000 + 1000 = common everybody knows that the answer is 3100

This is the correct answer. The confusing element was take 1000

5000

[quote author=haibe][/quote]It's a surprise that most people cannot solve this simple arithmetic.(even undergraduates and so called Graduates). Yet they call their leaders names like daft, retardeen etc. It's a big shame.

Take 1000, (-1000) add 1000 (=0), 40+30+20+10=100....
'Another 1000?' what shud i do with it?
Standing answer =100, then add the last two 1000....final answer = 2100....#datsMyOwnAnswer

bobby256: Lol.Dude dnt get me wrng,d answa is 5100.If u assumed d initial is 0,basically ur sayin ur usin integer cuz d lower limit of an integer is 0 nd upper limit is +infinity.-1000 is real,wit lower limit -infinity nd upper limit +infinity,so if its a real number,u cnt jux assume its 0(I do get d fact dat ur tryin 2 disapprove d oda guy by dat logic bt its also knd of wrng) .So u cnt add -1000 to 40,-real + integer,it won't work.Dnt wana prolong,if ur a mathematician,u'd understand.
P.s,I'm a mathematician and computer scientist.

hey mathematician who be your teacher? Abeg abeg abeg! Wetin be integer? Find out, then apologise to nairalanders. Integers are whole numbers positive,negative and zero. Hmmmm I hope u have not come in contact with our students oh. Because that will be disasterous. Besides it's a simple puzzle you don't need too much knowledge of mathsto solve it. Common sense is not that common sha.

2pac say is #5000

This question is a typical example of hw der could be errors eye-brain coordination.. Tk a mirage 4 example, u c it, ur brain tells u it's der, bt wen u get close enof, u find out it's jst an optical illusion.. Somtyms, 2 answer tricky questions lyk dis, u nid a 3rd party, the mouth. This can b answered easily by paraphrasing, thus, the eye sees, the mouth says then the brain processes wat the mouth says... If u do dat, u'll find out d answer's 4100.. Hop dis helps

2100

Lol... I read so much 4100 dt I typed it myself... D correct answer's 5100

4100

Sometimes, you need to restrict your 'riddling' to the real world. Maths isn't where you come throwing riddles about, forgetting that even common place words like 'and' 'or' 'not' etc, have different meanings..

You are adding 1000 four times --> 4000
Then you are adding 40+30+20+10 --> 100

Answer:
4,100

Reason?
Associative and commutative rules of addition

1000+40=1040
1040+1000=2040
2040+30=2070
2070+1000=3070
3070+20=3090
3090+1000=4090
4090+10=4100

Take 1000 it should be -1000 other addition will be 4100 thus the answer should be 4100-1000
The real-real-real-real answer should be 3100 GBAM

4020

What I can deduce from this is how humans complicate simple instructions

5100. I love maths...

5,100 very simple

with my mathematical knowledge, i think op is wrong. In mathematics, when you take any figure then you have a negative i.e. -1000. therefore, we have -1000+40+30+20+10+1000+1000+1000+1000=3100

2100

5100

bobby256: Lol.Dude dnt get me wrng,d answa is 5100.If u assumed d initial is 0,basically ur sayin ur usin integer cuz d lower limit of an integer is 0 nd upper limit is +infinity.-1000 is real,wit lower limit -infinity nd upper limit +infinity,so if its a real number,u cnt jux assume its 0(I do get d fact dat ur tryin 2 disapprove d oda guy by dat logic bt its also knd of wrng) .So u cnt add -1000 to 40,-real + integer,it won't work.Dnt wana prolong,if ur a mathematician,u'd understand.
P.s,I'm a mathematician and computer scientist.

Oga Maths, you got it all upside down! Make reference again!

1100

6K Baby!

oladapo_a1: -1000 + 40 + 1000 + 30 + 20 + 1000 + 10 + 1000 + 1000 = common everybody knows that the answer is 3100

That's if you live in d same planet with Bastien where 'take' now means 'take away'.

the correct answer is 4100 . u don't av to add the first 1000. every other fin will be added.

5100, Take it or quit Nairaland

5100

6,000

Philistine: It's a surprise that most people cannot solve this simple arithmetic.(even undergraduates and so called Graduates). Yet they call their leaders names like daft, retardeen etc. It's a big shame.

Philistine, you still haven't solved it o. This is not an English speaking session,solve the arithmetic if you can and douse the tension.

seye15627: It has 2 answers: 2070 and 3030 abeg op post your answer

sholay2011: I fear your knowledge of maths.

I hope you're being sarcastic though.

he's actually not being sarcastic. . ..he's adding up two different set of figures . . . . . .
Take 1000 and add 40 to it.
Now add another 1000.
Now add 30.
he's assuming this is one set


Another 1000.
Now add 20.
Now add another 1000.
Now add 10.
And then add 1000
and this is the second set

his reasoning being that he wasn't asked to add the third 1000 to the previous figures

5100