Riddles and Puzzles

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beastie

Guru
Location
penrith
Zero, due to it being not a triangle but a straight line
 

Rickshaw Phil

Overconfidentii Vulgaris
Moderator
Teeth! teeth! my preciousss; but we has only six!

Gollum.jpg
 

madferret

Über Member
Location
Manchester
@Rickshaw Phil That's what I looked like when I saw the weather this morning.. sssssssssssss!
 

Salad Dodger

Legendary Member
Location
Kent Coast
Doesnt matter. Draw it any way up, as you have the length of the 3 sides.

By the way, don't listen to me - I barely scraped O level maths, and that was 40 years ago......
 
OP
OP
classic33

classic33

Leg End Member
A teacher of mathematics used an unconventional method to measure a 15-minute time limit for a test. He just used 7 and 11-minutehourglasses. During the whole time he turned sandglasses only 3 times (turning both hourglasses at once count as one flip).
Explain how the teacher measured 15 minutes
 
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