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Aug 19, 2008
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Climbing Snail
A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night it slides 4 meters back downwards.

The Question: How many days does it take before the snail reaches the top of the pit?
 

ahamednishadh

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  • Sep 17, 2006
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    Sri Lanka => Colombo => Colombo 06
    AtulaSiriwardane said:
    Climbing Snail
    A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night it slides 4 meters back downwards.

    The Question: How many days does it take before the snail reaches the top of the pit?

    dude da snail wud be out in 20 days. in 19 days it wud have come up to 19 meters and then on da 20th day it wud finally come out!

    correct da?
     

    Tharindu Chat

    Active member
  • Feb 26, 2008
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    ahamednishadh said:
    dude da snail wud be out in 20 days. in 19 days it wud have come up to 19 meters and then on da 20th day it wud finally come out!

    correct da?
    No machanzz

    In 15 days snail wud com 15 metres..ON 16th day it wud climb further 5 meters..so nw it it wud hav alredy climbed 20 meters,nah?????

    SO the answer 2 my mnd z 16 days