Question

the measurement, 206.0 c, has how many significant digits?
a 1
b 2
c 3
d 4
e 5

Explanation:

Step1: Recall significant digit rules

Significant digits: Non - zero digits are significant. Zeros between non - zero digits are significant. Trailing zeros after a decimal point are significant.

Step2: Analyze 206.0

• The digit 2 is non - zero, so it is significant.
• The zero between 2 and 6 is between non - zero digits, so it is significant.
• The digit 6 is non - zero, so it is significant.
• The trailing zero after the decimal point (the 0 at the end of 206.0) is significant.

So, the digits 2, 0 (between 2 and 6), 6, and 0 (trailing after decimal) are significant. That's 4 significant digits.

Answer:

D. 4