# Thread: Easy Brain Teaser. First one with right answer gets the 10 points?

1. YahooHoo
Join Date
Sep 2007
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2

## Easy Brain Teaser. First one with right answer gets the 10 points?

Before Mount Everest was discovered, what was the highest mountain on Earth?

2. YahooHoo
Join Date
Sep 2007
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1
mt everest. 10 points please

3. YahooHoo
Join Date
Sep 2007
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1
mount olympus or uhmm the mountain of the gods wich they call it..since in greek mythology htey say it reached the heavens

4. YahooHoo
Join Date
Aug 2007
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5
I guess you would have to be a guy to think that simple.

Mt. Everest, makes sense now!

5. YahooHoo
Join Date
Sep 2007
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1

## Brain Teaser!?

Here's the question, does anyone know the answer?

The parellelogram bounded by the lines y=ax+c , y=ax+d , y=bx+c , and y=bx+d has the area 18. The parellogram bounded by the lines y=ax+c , y=ax-d , y=bx+c , and y=bx-d has the area 72.

Given that a ,b ,c and d are positive integers, what is the smallest possible value of a+b+c+d?

If possible, could you explain how you got your answer so I could learn?
Thanks!

6. Entry Level Fresher
Join Date
Aug 2009
Posts
15
upon visually interpretation(using graph theory)
c=3d, 16*d*d=36*(a-b) a=-b
so a=2,b=-2,c=9,d=3
a+b+c+d=12
to solve ...we can first visualize by drawing these straight lines that these must represent a rhombus and when area is becoming one-fourth by one vertex from (-d,0) to (d,0) that means both diagonals of rhombus would have half lengths of their previous lengths. i.e c+d=2(c-d) so c=3d and calculating length of other diagonal and given the area we get
(c+d)*2(c+d)/(a-b)=72
so that gives us ans

7. YahooHoo
Join Date
Sep 2007
Posts
1

## Brain Teaser?

How many whole numbers between 0 and 200 are divisible by both 4 and 6?

8. Entry Level Fresher
Join Date
Aug 2009
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15
quite easy one: all divisible by 12
16 mumbers......12..24..36........192

9. YahooHoo
Join Date
Sep 2007
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1

## Brain Teaser?

Donald+Ronald = Gerald

Each letter stands for a number...does anyone number each letter corresponds to?

10. Entry Level Fresher
Join Date
Aug 2009
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15
many solutions possible but in all a,l,d=0 r=g
like: 031000+231000=262000

11. YahooHoo
Join Date
Sep 2007
Posts
1

## Brain Teaser?

There is a bus with 7 girls inside,
Each girl has 7 bags,
Inside each bag, there are 7 cats,
Each cat has 7 small cats,
All cats have 7 nipples each.

Question: How many nipples are there inside the bus?

12. Entry Level Fresher
Join Date
Aug 2009
Posts
15
ques posted already...but instead of nipples..it was legs

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