16 June 2017
523. Balance the scale: Add 1
The vertical matchsticks on the scale all have the same weight. To balance the scale you need to add 1 more matchstick. Where would you place it?
In the original puzzle:
Left of balancing point: 4 + 2 + 1 + 1 = 8 units
Right of balancing point: 3 + 3 + 4 = 10 units
From the above we can see we need to add 2 more units to the left of the balancing point. This is done by placing the matchstick as shown in the solution.
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