Assertion : Number of significant digit in 0.002 is one and that in 0.500 is three.
Reason : If number is less than 1, then zeroes before the non-zero numbers are not significant and zeroes after non-zero number are significant.
If the number is less than 1, the zero(s) on the right of decimal point but to the left of the first non-zero digit are not significant. The trailing zero(s) in a number with a decimal point are significant.
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