annaes5panale3r annaes5panale3r

30-11-2016
Mathematics

contestada

How many permutations of the letters ABCDEFG contain:
a.) the string BCD?
b.) the string CFGA?
c.) the strings BA and GF?

Respuesta :

syed514 syed514

06-12-2016

The strings BCD?
5! >>>>>>>>> [A (BCD) E F G]

The string CFGA?
4! >>>>>>>>> [B (CFGA) D E]

The strings BA and GF?
5! >>>>> [(BA) C D E (GF)]

Answer Link

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