Riddles, one at a time
Inside the Loop: The Winding Wall
Which gem is INSIDE the loop?
Count wall crossings on the way to the edge: odd means inside.
C
Gem C is inside; A, B and D sit in pockets that open to the outside.
Which Tank Fills?
E
The cap stops A. Water takes each lowest open pipe: B, then D, then E.
Shaded Part: The Triangle
What fraction of the square is gold?
Cut the triangle down the middle and move one half.
1/2
The triangle has the full base and full height of the square, so it is half: 8 of 16 squares.
Yesterday's Clue
What day is tomorrow?
Work out yesterday first, then count forward one day at a time.
Thursday
Yesterday was Tuesday, so today is Wednesday: tomorrow is Thursday.
Hands Apart: 3:30
What is the SMALLER angle between the hands?
At 3:30 the hour hand is halfway between 3 and 4.
75°
Hour hand at 105°, minute hand at 180°: 75° apart.
Two Candles: Twice as Tall
Two candles of the same height are lit together and burn at a steady rate. A lasts 4 hours, B lasts 6 hours. After how many hours is B twice as tall as A?
A loses a quarter of its height each hour, B loses a sixth.
3 hours
After 3 h, A has 1/4 left and B has 1/2 left: twice.