Question: The error bound, when a number A is rounded off to p significant decimal figures is given by |r| < 0.5* 10 to the power

The error bound, when a number A is rounded off to p significant decimal figures is given by |r| < 0.5* 10 to the power of 1 minus p end exponent. If A is required to yield a maximum error of 0.49%, to approximately how many significant decimal digits should A be rounded off? Answer to the nearest whole number.

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