Riddles, one at a time
How Many Triangles?
How many triangles are in the figure?
15
Single pieces plus every combined shape: 15 in all.
Two Glass Cards
Slide the two glass cards together. Which number appears?
Imagine the strokes of both cards on one card.
48
Card A's strokes fill the gaps on card B: 4 and 8.
Dim or Bright
What number does the last row show?
First find each lamp's value: the top row gives the left lamp.
22
The top 3 rows give lamp values 9, 3 and 1. Bright counts double: 18 + 3 + 1 = 22.
Fewest Tokens: Pay 24
Which tokens pay 24 with the fewest tokens?
Biggest first is not always fewest. A token can be used many times.
6 + 6 + 6 + 6
Just 4 tokens. Biggest first, 15 + 6 + 1 + 1 + 1, needs 5.
Inside the Loop: Only One Is In
Which gem is INSIDE the loop?
Count wall crossings on the way to the edge: odd means inside.
A
A line from gem A to the edge crosses the wall an odd number of times; from B, C or D, an even number.
Five Words Share a Secret
Five of these words share a secret. Which one does not?
Look for words inside the words.
THREAD
The others hide ONE, NINE, ONE, TWO and TEN. THREAD only looks like it hides THREE.