Question

Which number has the greatest number of significant digits?

a. 1.0035

b. 17.5000

c. 0.0000625

d. 6.022 1023

Answer 1

Number 17.5000 (b) has the greatest number of significant digits, with a total of six.

Correct option is B

Step-by-step explanation:

The student is asking which of the given numbers has the greatest number of significant digits. To determine the number of significant figures for each number, we apply specific rules related to leading, captive, and trailing zeros, as well as counting all non-zero digits.

1. 1.0035 has five significant figures (all non-zero digits are significant, zeros between significant figures are also significant).
2. 17.5000 has six significant figures (trailing zeros in a decimal number are significant).
3. 0.0000625 has three significant figures (only the non-zero digits are counted, leading zeros are not significant).
4. 6.022 × 1023 has four significant figures (the number in scientific notation indicates significant figures before the exponent).

Therefore, the number 17.5000 (b) has the greatest number of significant digits with a total of six.

Answer 2

a. 5 SF
b. 6 SF
c. 3 SF
d. 8 SF

so D is the right answer