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Puzzle of the Day

These puzzles are also printed in Eight days a week, a booklet published by the Association of Teachers of Mathematics.

Can you find four consecutive numbers which add up to 10?, 14?, 50?, 106? Is there a quick way to find them?

Answer: 1, 2, 3, 4; 2, 3, 4, 5; 11, 12, 13, 14; 25, 26, 27, 28. Divide by 4 to find middle