document.write( "Question 174657: How many significant digits are in 20.50? \n" ); document.write( "
Algebra.Com's Answer #129682 by tutorcecilia(2152)\"\" \"About 
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There are only three significant digits. The last zero is just a \"place holder\" and has no value. \r
\n" ); document.write( "\n" ); document.write( "If the number were 20.05, than it would have four significan digits because the last zero is followed by a number (other than another zero).
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