Riddles, one at a time
Longest Roman Year
Which year needs the MOST Roman letters?
Some digits need many letters: 8 is VIII, but 9 is just IX.
Video · Hard
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1888
1888 = MDCCCLXXXVIII: 13 letters. 1777 needs 10.
Fold the Net
Symbols keep their direction. Which cube folds from this net?
Video · Medium
Challenge link
B
Folded up, star, ring and half-square sit just like B.
Hands Apart: 6:30
What is the SMALLER angle between the hands?
The hour hand is not on the 6 at 6:30.
Video · Medium
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15°
At 6:30 the hour hand is halfway from 6 to 7: 15° from the minute hand.
Fewest Tokens: Pay 11
Which tokens pay 11 with the fewest tokens?
Biggest first is not always fewest. Try every pair.
Video · Hard
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5 + 6
Just 2 tokens. Biggest first, 9 + 1 + 1, needs 3.
Join the Dots
Join 3, 6, 9... in order. What appears?
Video · Easy
Challenge link
C LANTERN
3 to 45 traces a lantern; the rest are decoys.