alleryIn the entry 10 ± 2, the sign ± shows what?
AAn exact value of 12
BA range from 8 to 12
CA product of 10 and 2
DA ratio of 10 to 2
Answer & Solution
Correct answer: B. A range from 8 to 12
1. ± can show the range a measured quantity may have.
2. 10 ± 2 means a value between 10 − 2 and 10 + 2.
3. That range runs from 8 to 12.
_Source: Wikipedia, Glossary of mathematical symbols, Arithmetic operators_
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