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What is the value of the digit 3 in the number 2,135,789?
##3 xx 10,000 = 30,000##
In any number each place value represents a certain power of 10.
In ##2,1color(red)(3)5,789##, the place value for the ##color(red)(3)## is ten thousands
The value of the 3 is therefore ##color(red)(3 xx 10,000 = 30,000)##