Question

Mark the statements which are correct.

(Select all that apply.)

1 km = 10^5 mm
10^-3 kg = 10^3 mg
1 cm^3 = 10 mL
10^3 ms = 10^9 ns
10^9 pg = 10^12 fg

Answer 1

Correct statements: 2, 4, 5.

Brief checks:
- 2: 10^-3 kg = 0.001 kg = 1 g = 1000 mg = 10^3 mg — true.
- 4: 10^3 ms = 1000 ms = 1 s; 10^9 ns = 1 s — true.
- 5: 1 pg = 10^3 fg, so 10^9 pg = 10^9·10^3 fg = 10^12 fg — true.

(1 and 3 are false: 1 km = 10^6 mm, and 1 cm^3 = 1 mL.)