Questions

Forty thousand with three significant figures is written as:

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a

40.000×102

b

4.00×103

c

4.00×102

d

40.0×102

detailed solution

Correct option is C

40,000 can be written in exponential form. In this form, the numerical portion N in Nx10n (where N=a number with a single non-zero digit to the left of the decimal point) represents the number of significant figures So 4.00×104 is the correct exponential form. It has three significant figures (=4.00)

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