Which of the following is not a valid conversion factor?
1 meter/100 centimeters. 1 ml/1 cm
1 kilometer/1000 meters
1 meter/10 millimeters

1 meter/10 millimeters is not a valid conversion factor

Step-by-step 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

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.