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Luis GR

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If positive integers a,b, and c satisfy a b=7 9
If a3=7+50−−√
Componendo and dividendo
The eventually repeating decimal 0.0116¯¯¯¯ c
The repeating decimal 0
Sum of squares
1-doing now
Sunny is trying to buy a fixed number of chair
Up and down the hill brilliant
Two arithmetic operations
Triangle with special point d
Two right triangles
Two arithmetic operations
The year 2013 consists of 4 distinct digits