Riddles, one at a time
Word Ladder: Grain to Trait
TRAIN
BRAIN to TRAIN changes B to T; TRAIN to TRAIL changes N to L.
Climbing Robot
A robot climbs a 10 m wall. Each day it climbs 3 m; each night it slips back 2 m. On which day does it reach the top?
On the last day it does not slip back.
Day 8
After night 7 it is at 7 m; day 8 takes it to 10 m.
Glass Overlay: Lines Cancel
Which card completes the grid?
Lines that appear on both cards disappear; all the other lines stay.
B
In each row, lines on both cards cancel and the rest stay. Row 3 gives card B.
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.
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.
Three Glass Panes
Which colour hides under the ? card?
B RED
Magenta stops green, yellow stops blue: red is left.