Answer:
1 significant figure is the Answer
Explanation:
The zeros are not trailing after the digit 6. Hence they are not significant.
Rules:
Non zero digits are always significant.
For example 2356 has 4 significant figures
Zeros between Non zero digits are always significant.
3007 has 4 significant figures
In a decimal trailing zeros are significant.
For example 0.0003 has 1 significant figures and 0.003000 has 4 significant figures.
