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EN বাং

Long columns

Keep accuracy over ten numbers in a row.

Exam and competition work is a long column of numbers added one after another. Accuracy beats speed every time — one wrong bead ruins the whole column.

Take each number in turn, set it, and move on. Never go back to check; trust the beads.

    Now you try

    Fresh problems every time you open this page, built to need the technique above.