brain teasers

[didghtara]

a snail is at the bottom of the well the well is thirty meters deep the snail advances three meters in one day during the night the snail slides back two meters how many days will it take the snail to reach the top of the well

[Dinkypuzzled]

28 days.

[Gizmonster]

Just in case anyone is thinking that the answer is 30 days - after 27 days the snail has climbed up 27 metres (up 3 metres and back down 2 metres = an overall gain of 1 metre per day) ...... on the 28th day the snail climbs up 3 metres and is free ..... so Dinkypuzzled answer of 28 days is correct :P