Riddles, one at a time
One Stroke: Tall
Without lifting your pen and without going over any line twice, which figure can you draw?
Count the lines at each dot. Odd dots must be the start or the end.
C
C has only 2 odd dots. A has 6; B and D have 4.
Glass Overlay: Busy Cards
Which card completes the grid?
Keep only the lines that appear on both of the first two cards.
D
In each row, only lines on both cards stay. Row 3 gives card D.
The Clock in the Water
Top and bottom swap in the water. What time does the real clock show?
7:50
Water flips top and bottom: flip the hands back up.
Mirror Clock: 13:31
How many minutes until the clock shows the next mirror time?
Try the next hour: 14:??
70 minutes
The next mirror time is 14:41, 70 minutes later.
Growing Corner
Steps 4 to 14 are not shown. How many tiles will step 15 have?
Each step adds 2 tiles: one on each arm.
32
Two arms of 16 share the corner (31), plus the inner tile: 32.
Mirror Odometer: 29992
11 km
The next mirror number is 30003, just 11 km on.