Answer:
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3.126
Explanation:
Bar notation is a way in Mathematics to write decimal number that are repetiting or infinite.
Bar notation symbol is – is placed above the first decimal number that repeats itself. It is easier than writing the same repeating number and over again. It tells us that this particular number with the bar over it, is repeated continuously till infinity
From the above question, we were asked to write 3.126666666666... using Bar notation
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3.126666666666... = 3.126
The bar is placed over the digit 6