Mathematics, 09.12.2021 05:10 princessroseee769
21. How many permutations of the letters ABCDEFG contain a) the string BCD? b) the string CFGA? c) the strings BA and GF? d) the strings ABC and DE? e) the strings ABC and CDE? f ) the strings CBA and BED?
Answers: 1
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Answer this question only if you know the 30 points and
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Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
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21. How many permutations of the letters ABCDEFG contain a) the string BCD? b) the string CFGA? c) t...
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