Daily Archives: December 4, 2021

day/dydd 338 at 7puzzleblog.com

The Main Challenge Here’s a number trail involving 12 arithmetical steps. Start with the number 21, then: 1/3 of this multiply by seven +23 ÷3 +75% +5 –7 Find 10% of this Square this +2 Double this Square root of … Continue reading

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