**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!**

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$3! 2! = 12$

$ABCDE, ABECD, ACDBE,$

$ACDEB, AECDB, AEBCD,$

$ABDCE, ABEDC, ADCBE,$

$ADCEB, AEDCB, AEBDC$

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Question ID: mtid-5-stid-8-sqid-2923-qpid-1622