Question

3. Of the following, which one has 5 signifcant fgures? (a) 0.02001 (b) 20100 (c) 0.025400 (d) 21 x 103​

Answer 1

Answer:

A

PLZ:

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Explanation:

• All non-zero numbers ARE significant.

• Zeros between two non-zero digits ARE significant.

• Leading zeros are NOT significant.

• Trailing zeros to the right of the decimal ARE significant.

• Trailing zeros in a whole number with the decimal shown ARE significant.

• Trailing zeros in a whole number with no decimal shown are NOT significant.

• Exact numbers have an INFINITE number of significant figures.

• For a number in scientific notation: N x 10x, all digits comprising N ARE significant by the above rules; "10" and "x" are NOT significant.

Answer 2

Answer:

0.025400

Explanation:

it has 5 significant