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Daily logic puzzle with a worked solution

A new puzzle for each date: a logic grid, a truth-teller puzzle or a number puzzle in turn. Reveal the reasoning or print it with the answer.

Puzzle for : number puzzle

A new puzzle every day: a logic grid, a truth-teller puzzle and a number puzzle take turns. Pick an earlier date to play a past puzzle, back to 27 Sept 2026.

1 puzzle · Logic puzzle for 5 Nov 2026 · answers included

Logic puzzle for 5 Nov 2026

Choose a score button to add a point. Scores last for this page visit.

Space shows the answer, then the next card. Arrow keys move. With scores on, keys 1 to 6 add a team point. F fills the screen. Escape closes play.
  1. 1

    Three archive boxes hold 7054 cards altogether. Box B holds twice as many as box A. Box C holds 6 more than box A. How many cards are in each box?

    medium

    Answer

    A: 1762; B: 3524; C: 1768.

    Let A = x. Then x + 2x + (x + 6) = 7054, so 4x = 7048 and x = 1762. Check: 1762 + 3524 + 1768 = 7054.

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