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Math Quiz

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Posted: #1
Not to name any names, but I see people here struggling with math questions (could be a result in our reliance on calculators and other modern technology, but that's a different topic).
This thread is for people to post math brain teaser questions to help develop rational thinking skills.
I realize that this should probably be in the General Discussion folder, but I think it would benefit system players more then the general public.

To start off, here is a question that Schlumberger asked me during my first interview out of college:

There are 200 fish in an aquarium, 99% are goldfish. How many goldfish must be removed so that the percentage of goldfish remaining in the aquarium is 98%?
 
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Posted: #2
Quote Originally Posted by Bart_:

Not to name any names, but I see people here struggling with math questions (could be a result in our reliance on calculators and other modern technology, but that's a different topic).
This thread is for people to post math brain teaser questions to help develop rational thinking skills.
I realize that this should probably be in the General Discussion folder, but I think it would benefit system players more then the general public.

To start off, here is a question that Schlumberger asked me during my first interview out of college:

There are 200 fish in an aquarium, 99% are goldfish. How many goldfish must be removed so that the percentage of goldfish remaining in the aquarium is 98%?
 
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Posted: #3
2

 
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Posted: #4
No, sorry, it is not 2.
If you take 2 out it is 98.9%
 
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Posted: #5
100
 
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Posted: #6
Yup.

Here's another one.
You have a square piece of paper, 10"x10". 100sq in.
Without a ruler or scissors how can you quickly turn it into a SQUARE which is 50sq in?
 
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Posted: #7
fold it in half
 
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Posted: #8
oops you said SQUARE, sorry
 
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Posted: #9
Fold all 4 corners to the middle
 
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Posted: #10
Yup.

Hold on, gotta think of another one.
 
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Posted: #11
Bart sending a PM to you in a few minutes. 
 
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Posted: #12
Here's another one:

What is the number pattern?
31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
 
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Posted: #13
The days of the month added to each other Jan=31 + Feb= 28 31+ 28=59 and so on. 
 
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Posted: #14
28
 
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Posted: #15

Quote Originally Posted by mindtides:

28

 

Seriously?

 
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Posted: #16
He's asking what the pattern is not what the next number is, its the days of the month added to each other in sequence I promise you.
 
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Posted: #17
Quote Originally Posted by JEFFTHEHAT:

The days of the month added to each other Jan=31 + Feb= 28 31+ 28=59 and so on. 

 
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Posted: #18
A number of children are standing in a circle. They are evenly spaced and the 7th child is directly opposite the 18th child. How many children are there altogether?
 
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Posted: #19
I'll let one one else answer but I know the answer. 
 
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Posted: #20
18-7=11 multiply by 2 = 22
 
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Posted: #21
22. Next 
 
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Posted: #22
Quote Originally Posted by hyvong:

18-7=11 multiply by 2 = 22

Good to see you're still around. Ready for MLB? PM me if your still up for it.  
 
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Posted: #23

A math sports betting question, to pass basic judgement on your math skills attached to wagering on a multi-sport 3-team parlay.If you cannot answer the question, then your MATH rating level is the 6th grade. 

Buffalo Sabres +352 (reverse) PL

LA Lakers +325 ML

Detroit Tigers +195 RL

RISK $100  WIN $****

the question; What is your payout?

 
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Posted: #24
$5567
 
 
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Posted: #25
To win $5567.
Payout = risk + win.

((((LineA+100)/100) x ((LineB+100)/100) x ((LineC+100)/100)) - 1) x Risk
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