LIST I | LIST II Purpose | ||
| A | Microphone | I | Used in vehicles to measure distance |
| B | Audiometer | II | For measuring the force and velocity of wind |
| C | Odometer | III | Converts sound waves to electrical vibrations |
| D | Anemometer | IV | Measures intensity of sound |
In supervised digital image classification, the number of combinations to be evaluated to select three best bands out of five bands is _____________