antoriagriffinA6272 antoriagriffinA6272

21-11-2019
Mathematics

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How many digit (0,1,2,3,4,5,6,7,8,9) sequences of length 9 are there that contain at least 4 odd digits (1.3.5.7.9) and at least 4 even digits (0,2,4,6,8)? (Repetition allowed.)

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crystalduru2020 crystalduru2020

21-11-2019

I’m not sure what the answer is

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