Below you will find the solution for: Having more than 2 blades on this is less efficient but also quieter--some have as many as 10 Jeopardy .
Since you already solved the question Having more than 2 blades on this is less efficient but also quieter--some have as many as 10 which had the answer PROPELLER, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy May 11 2021
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