Riddles, one at a time
Turn, Flip, Turn
Which card do you get?
Mark one corner of the card and follow it through each step.
A
Turn, flip top-bottom, turn: the same as one top-bottom flip. A.
I am a three-digit number. My three digits are all different, and they multiply to 6. I am even, and I am less than 200. What number am I?
The Even Number
Which three different digits multiply to 6?
132
Different digits that multiply to 6 can only be 1, 2 and 3. Below 200 means starting with 1: 123 or 132. Only 132 is even.
Old Phone Keys: 2283
Which of the four words types 2283?
The third letter decides it: which key is it on?
CAVE
C and A are on 2, V on 8, E on 3: 2283.
Fold, Fold, Punch
Which pattern appears when it is opened?
D
Each fold mirrors the holes across its crease.
Word Ladder: Tool to Book
COOK
COOL to COOK changes L to K; COOK to HOOK changes C to H.
Mirror Odometer: 15951
How many more km until the next mirror number?
The middle digit is already 9, so it cannot go up. What has to change instead?
110 km
The next mirror number is 16061: 16061 − 15951 = 110.
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