Question

The number of significant figures for the three numbers$161cm,0.161cm,0.0161cm$

• A. 3,4 and 5 respectively
• B. 3,4 and 4 respectively
• C. 3,3 and 4 respectively
• D. 3,3 and 3 respectively

Answer 1

Answer: (D)

(d) (i) All non-zero digits are significant.
(ii) Non-zero digits to the right of the decimal point are significant.
(iii) Zeroes to the left of the first non-zero digit in a number are not significant.
So, the number of significant figures for the numbers $161cm,0.161cm$ and $0.0161cm$ are same, i.e. $3$.