navarreteanamen123
16.10.2019 •
Mathematics
Plz me with number 16 i dont really get it
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Ответ:
Ответ:
45
Step-by-step explanation:
The order in which the items are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
How many possible subsets of 2 items can be chosen from this lot?
Combinations of 2 from a set of 10. So