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beginner
Problem 04 • Step 01
One sign for each count
A line of pebbles is easy to read, but slow to copy, one pebble at a time. What if each count had a sign of its own? You already know nine such signs: 1 to 9.
Give each line one sign for how many pebbles it has. Tap a line, then a sign. Then press Check, and the pebbles go. There are 3 rounds.
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Exercise 01Loading...