Kenny's Classroom - Crack the Code. Perfect for IWB or Digital Classroom Download this collection of puzzles with step-by-step clues students follow to figure out the combination lock! Awesome brain-teasers and puzzles
Number Lock Puzzle: Can You Crack the Code? | Suresolv
Crack the code puzzle answer - Riddlester
Lock Combination Puzzle with Answer
Solution: 'Perfect Randomness' | Quanta Magazine
A different type of combination puzzle : r/puzzles