Question

how many significant figures are there in 0.0030200 and 206,000?

a) 0.0030200 has 5 and 206,000 has 6

b) 0.0030200 has 7 and 206,000 has 3

c) 0.0030200 has 2 and 206,000 has 2

d) 0.0030200 has 5 and 206,000 has 3

Explanation:

Step1: Determine significant - figures for 0.0030200

Leading zeros are not significant. Non - zero digits (3, 2) and trailing zeros after a non - zero digit in a decimal number are significant. So, 0.0030200 has 5 significant figures.

Step2: Determine significant - figures for 206,000

Trailing zeros in a number without a decimal point may or may not be significant. By default, 206,000 has 3 significant figures (2, 0, 6).

Answer:

D. 0.0030200 has 5 and 206,000 has 3