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Anonymous users2024-02-05The smallest number is, so the sum of the 4 numbers must be greater than the 200-210 range, so only the sum of the numbers within 4 (two or three numbers combined) can be added.
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Anonymous users2024-02-04If there are 9 of them.
Yes, then there is one in total.
So there are a total of 9+1 10 combinations.
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Anonymous users2024-02-03Satisfied. 12 numbers, each independent of each other, is any number from 1 to 20, that is, each number has 20 possibilities.
There are a total of 20 12 permutations.
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Anonymous users2024-02-02What is the combination?。。 Small table.
Number of digit combinations. I'll write you a combination of 1-3 digits, and you can figure it out as long as you understand it!
1-digit combination: 1, 2, 3, 4, 5, 6, 7, 8, 9There are 9 different combinations – 2-digit combinations: 20x20 if the numbers can be repeated. If the numbers are not repeatable, then.
The first number has 20 choices, and the second number has (20-1) or 19 choices, for a total of 20x19=380 choices.
3-digit combination: 20x20x20 if the numbers can be repeated. If the numbers are not repeatable, then.
There are 20 choices for the first number, (20-1) for the second, and (20-2) for the third.
There are a total of 20x19x18 = 6840 options.
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Anonymous users2024-02-01If [irrespective of] the order, there is c(8,4)=70 (kinds).
If the order is different, it is counted as a different combination, there is a(8,4)=1680 (species).
Every time you send a text message, there is always a thought, "But the phone with the button, don't touch the screen" After you jump to the number, look at the pinyin and think about yourself typing == like the big Chinese characters
520: I love you 1314 for a lifetime 886 bye-bye.
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