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Numbers problems
4 problems: 3 easy, 1 medium and 0 hard. Start at the top; each one assumes the ones above it.
Not started
Easy
How many digits
Numbers, Basics
Not started
Easy
Reads the same backwards
Numbers, Basics
Not started
Easy
Turn the digits around
Numbers, Basics
Not started
Medium
Raising to a power without multiplying that many times
Numbers, Basics