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How many sets of 7 unique numbers will be made by 1 to 42?
We can do 3 sets of numbers uniqe choosing 3 numbers Unique 1 to 3. as .... 1.2 .. 1.3 .... 2.3 .... well as how to develop many unique numbers will be total of 7 to 1 by choosing 42? I must say that intelligent person who give me THT answer to this question ..
You mean "We can do 3 sets of numbers by selecting uniqe 2 issues unique "(not 3) Your question can be answered easily: C (42.7) = 42 / (7 (42-7)!) = 42 * 41 * 40 * 39 * 38 * 37 * 36 / (2 * 3 * 4 * 5 * 6 * 7) = 26 978 328
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