LadyHolmes67
04.12.2019 •
English
How many strings of six lowercase letters from the english alphabet contain
a) the letter a?
b) the letters a and b?
c) the letters a and b in consecutive positions with a preceding b, with all the letters distinct?
d) the letters a and b, where a is somewhere to the left of b in the string, with all the letters distinct? rosen, kenneth. discrete mathematics and its applications (p. 436). mcgraw-hill higher education. kindle edition.
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Ответ:
answer: c
explanation:
Ответ:
The narrator of "Uncle John's Farm" is .
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