Riddles, one at a time
Longest Roman Numeral
Which number from 1 to 99 has the longest Roman numeral, written the usual way?
Which digits need the most letters on their own?
88
88 = LXXXVIII, 8 letters. No other number below 100 has 8.
Tangled Cords
Which switch lights the star lantern?
SWITCH C
Follow cord C over and under: it ends at the star.
Flip, Then Turn
B
Flip left-right first, then a quarter turn clockwise: card B.
What Am I? Teeth but No Bite
Which object fits all three clues?
A comb and a saw have teeth too. Check clues 2 and 3.
Key
It has teeth that never bite, opens what is shut and lives on a key ring: D.
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.
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.