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Earn +20 ptsQ: What is 12c4?
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What is the value of 12C4?
The value of 12C4, also known as "12 choose 4" or the combination of 12 items taken 4 at a time, can be calculated using the formula for combinations: nCr = n! / (r!(n-r)!), where n is the total number of items and r is the number of items being chosen. Plugging in the values for 12 and 4, we get 12C4 = 12! / (4!(12-4)!) = 495. Therefore, the value of 12C4 is 495.
How many different selections of 4 books can be made from a bookcase displaying 12 books?
The answer is 12C4 = 12*11*10*9/(4*3*2*1) = 495
How many four digit combinations are there in the numbers 1 to 12?
There are 12C4 4 NUMBER combinations. And that equals 12*11*10*9/(4/3/2/1) = 495 combinations. However, some of these, although 4 number combinations consist of 7 digits eg 1, 10, 11, and 12. Are you really sure you want 4-DIGIT combinations?
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