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A clock strikes once at 1 o'clock, twice at 2 o'clock, and so on. How many times does it strike from 1 o'clock to 6 o'clock (inclusive)?
Easy
A clock strikes once at 1 o'clock, twice at 2 o'clock, and so on. How many times does it strike from 1 o'clock to 6 o'clock (inclusive)?
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