$1 \mathrm {~mm} =$
A) $\frac { 1 } { 1000000 } \mathrm {~km}$ $\frac { 1 } { 1000 } \mathrm {~cm} \text {, }$ $\frac { 1 } { 10 } \mathrm {~m}$
B) $1,000,000 \mathrm {~km}$ $10 \mathrm {~cm}$ $1,000 \mathrm {~m}$
C) $\frac { 1 } { 1000000 } \mathrm {~km}$ $\frac { 1 } { 10 } \mathrm {~cm}$ $\frac { 1 } { 1000 } \mathrm {~m}$
D) $1,000 \mathrm {~km} \text {, }$ $10 \mathrm {~m} \text {, }$ $1,000,000 \mathrm {~cm}$
E) $\frac { 1 } { 1000 } \mathrm {~km} \text {, }$ $\frac { 1 } { 10 } \mathrm {~cm}$ $\frac { 1 } { 1000000 } \mathrm {~m}$

Question

Quizplus · Accepted Answer

1 millimeter (mm) is equal to 0.001 meter (m). Therefore, it is not equal to 1km or 1cm. 
Option A is incorrect because it suggests that 1mm is equivalent to 1/1000000 km, which is wrong. It should be 1/1000000 m, not km. 
Option B is incorrect because it suggests that 1mm is equivalent to 1,000,000 km or 1000 m or 10 cm, which is not true. 
Option D is incorrect because it suggests that 1mm is equivalent to 1,000 km or 10 m, or 1,000,000 cm, which is not true. 
Option E is incorrect because it suggests that 1mm is equivalent to 1/1000 km or 1/10 cm or 1/1000000 m, which is incorrect. The correct conversion is 1/1000 m, 1/10 cm, and 1/1000000 km. 
Thus, the correct option is C, which states that 1mm is equal to 1/1000 m, 1/10 cm, and 1/1000000 km.

1 mm=1 \mathrm {~mm} =1 mm= A) 11000000 km\frac { 1 } { 1000000 } \mathrm {~km}10000001​ km

$1 \mathrm {~mm} =$ A) $\frac { 1 } { 1000000 } \mathrm {~km}$