Mole ConceptMedium
Question
The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are
Options
A.17.014 and 21.024
B.17.015 and 21.024
C.17.014 and 21.023
D.17.015 and 21.023
Solution
Sol. [Key Concept: Significant figures and rounding rules]
If the rightmost digit to be removed is 5 , then the preceding number is not changed if it is an even number, but it is increased by one if it is an odd number.
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