How many permutations of the numbers 12345678 Contain (a) the string 549 (b) the string 345? (c) the string 21 and 678 ? (d) the string 12.45 and 78? .
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1
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your answer
The sting 12.45 and 78.
Answered by
0
Answer:
a) 720
b)720
c)5760
d)5160
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