Question

How many significant figures are there in $0.030100\times {10}^6$?

• A. 1
• B. 3
• C. 5
• D. 7

Answer 1

Answer: (C)

5

As per the following rules of significant numbers:

1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant.

2) ALL zeroes between non-zero numbers are ALWAYS significant.

3) Zeroes placed after other digits but behind a decimal point are significant 4)Zeroes placed before other digits are not significant.

Hence in given number i.e. $0.030100\times {10}^6$ can be further simplified as $30100.00$

According to the rule 1, 3 and rule 4, the total significant numbers are 5.