Which prefix has the multiplier 0.0000001?

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Multiple Choice

Which prefix has the multiplier 0.0000001?

Explanation:
SI prefixes express powers of ten. Deci- is 10^-1, milli- is 10^-3, micro- is 10^-6, and nano- is 10^-9. The value 0.0000001 equals 1×10^-7, which isn’t represented by a standard prefix. Among the options, micro corresponds to 10^-6, not an exact match, and nano corresponds to 10^-9, which is even smaller. To express 1×10^-7 exactly with prefixes you’d use 0.1 micro or 100 nano.

SI prefixes express powers of ten. Deci- is 10^-1, milli- is 10^-3, micro- is 10^-6, and nano- is 10^-9. The value 0.0000001 equals 1×10^-7, which isn’t represented by a standard prefix. Among the options, micro corresponds to 10^-6, not an exact match, and nano corresponds to 10^-9, which is even smaller. To express 1×10^-7 exactly with prefixes you’d use 0.1 micro or 100 nano.

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