Question

how many significant figures are in the following number? 0.000710
7
3
6
2

Explanation:

Step1: Identify leading zeros

Leading zeros (before non-zero digits) are not significant. In 0.000710, the four leading zeros are not significant.

Step2: Identify non-zero digits

Non-zero digits are always significant. The digits 7 and 1 are significant.

Step3: Identify trailing zero

Trailing zeros after a decimal point, following non-zero digits, are significant. The final 0 in 0.000710 is significant.

Step4: Count significant figures

Add the significant digits: 7, 1, 0. That is 3 total.

Answer:

1. 3