Question

Which of the following numerical values has three significant figures?

a. 5.055

b. 0.050

c. 50.50

d. 0.500​

Answer 1

Answer:

d. 0.500​ has three significant figures.

Explanation:

The rules to determine significant digits are as follows:

• All non-zero numbers are significant.
• The zeroes between two non-zero digits are significant.
• Leading zeroes in both cases, i.e., in the presence or absence of decimal points are not significant.
• Trailing zeroes only at the right side of the decimal point are significant.

Using the above rules, we can see that d. 0.500​ has three significant digits.

Explanation for incorrect options:

a. 5.055 has four significant digits.

b. 0.050 has two significant digits.

c. 50.50 has four significant digits.

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