Each with each
Five pupils from 3A class played table tennis. How many matches did they play with each other?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- combinatorics
- combinatorial number
- multiplication principle
- planimetrics
- polygon
- diagonal
- basic functions
- reason
- numbers
- natural numbers
Units of physical quantities:
Grade of the word problem:
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