How Many Ways Can You Order 7 Things

This can be done `7! = 5040` ways.

How many combinations of 7 items are there?

7*6*5=210.

How many ways are there to arrange 7 books on a shelf?

thus , 7^7=823543 way.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.

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