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Clever regrouping (pair to round numbers)
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4-point ladder

Clever regrouping (pair to round numbers), 4-point ladder

●●○4 points, difficulty 2 of 34 pt

Two steps, or one step plus a trap.

3 in a row to finish this ladder.

0/3 solved

KA-0058

about 90s

What is 2 + 4 + 6 + ... + 100?