Question

In the following number the one having four significant figures is
a)0.0004
b)0.0078
c)0.530
d)5.038​

Answer 1

Answer:

option d

Explanation:

beacuse there can't be any insignificant digit between 2 significant digit

Answer 2

Option D has four significant figures.

• Use the three rules below to calculate the number of significant figures in a number:

1. Non-zero digits are usually important.
2. Any zeros between the first and second significant digits are significant.
3. Only the last zero or trailing zeros in the decimal section are important.

• Following the given above rules, we can see that 0.0004 has 1 significant figure, 0.0078 has 2 significant figures, 0.530 has 3 significant figures, and 5.038 has 4 significant figures.
• Thus, the answer to the question is option D.