Answer to Question #204250 in Discrete Mathematics for qazi

Discrete Mathematics

Question #204250

How many strings of length 5 can be made using the letters " ABCDE" which start with A and in which CD always comes together?

1 * 3!*2!

Expert's answer

"3!2!=12"

"ABCDE, ABECD, ACDBE,"

"ACDEB, AECDB, AEBCD,"

"ABDCE, ABEDC, ADCBE,"

"ADCEB, AEDCB, AEBDC"

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