Math, asked by archit23054, 2 days ago

Permutation and combinations
here's the question
If 19C8 + _?_ = 20C9 find _?_

Answers

Answered by sofianhendrik

0

Answer:

19c8+18c9?12c7=20c9find2?3

Step-by-step explanation:

Answered by harinder172j

0

Answer:

hope its correct thank you

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