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Maths Riddle

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#1 [Permalink] Posted on 5th September 2006 21:30

Assalamu Alaykum,


A quick riddle..


In the middle of a pool floats a water-lily. Every day, the water-lily doubles in size. After 20 days, the lily covers the entire pool. After how many days was the pool half covered?


Wassalam


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#2 [Permalink] Posted on 5th September 2006 21:35
19?
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#3 [Permalink] Posted on 5th September 2006 21:35



19 days ??


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#4 [Permalink] Posted on 5th September 2006 21:36
Yep correct! MashaAllah.
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#5 [Permalink] Posted on 5th September 2006 23:03
As Saamu Alaikum,


How did you work that out??


Jazkallah Khair


As Salamu Alaikum

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#6 [Permalink] Posted on 5th September 2006 23:25
Wa Alaykum Salam,

As it doubles in size each day, after the pool's half covered, it would take one more day to cover the other half (the entire pool). Hope you get that.

Wassalam

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#7 [Permalink] Posted on 6th September 2006 10:38
As Salau Alaikum,


Ohh..right yeh I get it now, Jazkallah Khair


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#8 [Permalink] Posted on 6th September 2006 10:52


Don't know how I missed this riddle !!!


Wasalaam


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