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Provided that 4*12=6 and 8*8=1. Find 5*6 A.1 B.2 C.3

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Provided that 4*12=6 and 8*8=1. Find 5*6 A.1 B.2 C.3  [#permalink] New post 21 Nov 2005, 02:48
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A
B
C
D
E

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Provided that 4*12=6 and 8*8=1. Find 5*6

A.1
B.2
C.3
D.4
E.5

Please don't feel unreasonable right away. Take a close look :wink:
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 [#permalink] New post 21 Nov 2005, 07:42
C. 3

a*b = c
c is the *signle digit sum* of product

4*6 = 24
2+4 = 6

8*8= 64
6+4=10
1+0=1

5*6=30
3+0 = 3
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 [#permalink] New post 21 Nov 2005, 07:47
good try but not the correct answer :wink: ..this problem uses some method which you're especially good at( I can tell from many of your posts) :roll:
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 [#permalink] New post 21 Nov 2005, 08:32
I am absolutely clueless..... lexi.. where did you get this :)
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 [#permalink] New post 21 Nov 2005, 08:55
laxieqv wrote:
good try but not the correct answer :wink: ..this problem uses some method which you're especially good at( I can tell from many of your posts) :roll:


as long as explanation satisfies all constraints and has no flaws, it has to be answer :)

unless question is ambiguous :)
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 [#permalink] New post 21 Nov 2005, 13:10
This is driving me nuts...please post the answer ASAP!
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 [#permalink] New post 21 Nov 2005, 16:37
try more~! I'll post OE and OA after my class today ^_~ ...btw, don't forget about the reasonable/ conventional products..
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 [#permalink] New post 21 Nov 2005, 20:16
Is it A) 1 ?

Ofcourse, i don't want to :oops: myself explaining how I came to this. This one should go in 'Fun Math' though apparently no one saw any fun in this...esp. stretchad!
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 [#permalink] New post 21 Nov 2005, 21:59
hik, this problem may be for fun maths or IQ test ..I'm sorry if it takes your precious time :oops:

OA is 2.
To find the answer, one needs to compare these weird products with their reasonable versions.
4*12= 48= 6 mod 7
4*12= 6 comes from the above reasoning

8*8= 64 = 1 mod 7
8*8=1 comes from the above reasoning

5*6= 30= 2 mod 7
---> 5*6= 2
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 [#permalink] New post 21 Nov 2005, 22:03
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:
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 [#permalink] New post 21 Nov 2005, 22:22
gsr wrote:
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:


qsr, let me talk to titleist to create those sadistic work problems for you when you are about to attend exec meeting tomorrow :)

by the way, good that i didnt try..don't think would have gone close to OA :)

good question laxieqv ...
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 [#permalink] New post 21 Nov 2005, 22:24
gsr wrote:
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:


3458^2389 = 30565492056345340534548605754645994343423355454353463423439964644545460753456343553472 :P
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 [#permalink] New post 21 Nov 2005, 22:27
laxieqv wrote:
gsr wrote:
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:


3458^2389 = 30565492056345340534548605754645994343423355454353463423439964644545460753456343553474 :P


Do you have a supercomputer or something at the University? :?
You both are Math 'Bombs'! Poor my fellow GMATTakers, because of guys like you, the 'harder' questions in the Q section will move to the 'easy Q's' bin. Very unfair :cry: Glad that I took the exam before you too!
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 [#permalink] New post 22 Nov 2005, 05:53
My husband got the answer this morning. Thanks for posting the answer!
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 [#permalink] New post 22 Nov 2005, 10:05
duttsit wrote:

as long as explanation satisfies all constraints and has no flaws, it has to be answer :)

unless question is ambiguous :)


Explanation has flaws. :-D

duttsit wrote:
a*b = c
c is the *signle digit sum* of product

4*6 = 24
2+4 = 6



It was 4*12, not 4*6. ;)
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 [#permalink] New post 22 Nov 2005, 10:10
laxieqv wrote:
gsr wrote:
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:


3458^2389 = 30565492056345340534548605754645994343423355454353463423439964644545460753456343553472 :P


Please show your work Laxie :shock: 8-)
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 [#permalink] New post 23 Nov 2005, 02:57
GMATT73 wrote:
laxieqv wrote:
gsr wrote:
See...that's why I didn't want to explain :lol:
My strategy for testing duttsit (and now including you) - I have posted in the GMAT forum under Titleist's post :wink:


3458^2389 = 30565492056345340534548605754645994343423355454353463423439964644545460753456343553472 :P


Please show your work Laxie :shock: 8-)


well, it's a top secret and my monopoly solution ( have to keep to defeat a supercomputer) :P
  [#permalink] 23 Nov 2005, 02:57
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Provided that 4*12=6 and 8*8=1. Find 5*6 A.1 B.2 C.3

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