Question

how many significant figures do the following numbers have?1) 1.7 x 10-3

Answer 1

1) Significant figures. These are digits in a number that are reliable and necessary.

Some rules.

All nonzero digits are significant.

Zeros that appear between nonzero digits are significant.

Trailing zeros are not significant without a decimal point

2) How many significant figures.

$1.7*10^{-3}$

This number has two significant figures, 1 and 7.

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