Final answer:
The number of weight-on-wheels (WOW) sensors varies by aircraft model; each main gear strut typically has one sensor and the nose gear usually has one sensor, but exact numbers should be checked with the aircraft's specifications.
Step-by-step explanation:
The number of weight-on-wheels (WOW) sensors on an aircraft's landing gear can differ based on the aircraft model and design. Generally, each main gear strut will have at least one WOW sensor, and there can be multiple sensors if there are multiple struts. On the nose gear, there is typically one WOW sensor since nose gears usually have only a single strut. However, the exact number can vary and should be verified with the aircraft's maintenance manual or manufacturer's specifications.