Answer:
1 meter/10 millimeters is not a valid conversion factor
Explanation:
The following conversion factors are valid
1 meter = 100 centimeters
1 mL = 1cm
1 kilometer = 1000 meters
The only conversion factor that is not valid is 1metre = 10millimeter
1meter in millimetres is the same as 10 in 3places not in one place as given in question.
1metres = (10×10×10)mm
1metres = 1000mm
The valid conversion factor is therefore 1m = 1000mm not 1metre = 10mm