yiseldelgado7573 yiseldelgado7573

20-12-2022
Mathematics

Answered

(1 point) how many words can we build using exactly 4 a's, 4 b's and 4 c's if the first 4 letters cannot be a's, the second 4 letters cannot be b's and the third 4 letters cannot be c's? hint: group the different ways according to the number of b's in the first group.

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