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Number of permutations of 1, 2, 3,4, 5, ...

Number of permutations of 1, 2, 3,4, 5, 6, 7,8 and 9 taken all at a time, such that the digit I appearing 3 appearing to the left of 4 and 5 somewhere to the left of 6, is

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Number of permutations of 1, 2, 3, 4, 5, 6, 7, 8, and 9 taken all at a time are such that the digit 1 appearing somewhere to the left of 2 3 appearing to the left of 4 and 5 somewhere to the left of 6, is kxx7! Then the value of k is _________.

Number of permutations of 1, 2, 3, 4, 5, 6, 7, 8, and 9 taken all at a time are such that the digit 1 appearing somewhere to the left of 2 3 appearing to the left of 4 and 5 somewhere to the left of 6, is kxx7! Then the value of k is _________.

Number of permutations of 1, 2, 3, 4, 5, 6, 7, 8, and 9 taken all at a time are such that the digit 1 appearing somewhere to the left of 2 3 appearing to the left of 4 and 5 somewhere to the left of 6, is kxx7! Then the value of k is _________.

Number of permutations of 1, 2, 3, 4, 5, 6, 7, 8, and 9 taken all at a time are such that the digit 1 appearing somewhere to the left of 2 3 appearing to the left of 4 and 5 somewhere to the left of 6, is kxx7! Then the value of k is _________.

Number of permutations of 1,2,3,4,5,6,7,8 , and 9 taken all at a time are such that digit 1 appearing somewhere to the left of 2 and digit 3 appearing to the left of 4 and digit 5 somewhere to the left of 6 , is (e.g. 815723946 would be one such permutation)

Number of permutations of 1,2,3,4,5,6,7,8 , and 9 taken all at a time are such that digit 1 appearing somewhere to the left of 2 and digit 3 appearing to the left of 4 and digit 5 somewhere to the left of 6 , is (e.g. 815723946 would be one such permutation)

Number of permutations of 1,2,3,4,5,6,7,8 , and 9 taken all at a time are such that digit 1 appearing somewhere to the left of 2 and digit 3 appearing to the left of 4 and digit 5 somewhere to the left of 6 , is (e.g. 815723946 would be one such permutation)

Number of permutations of 1,2,3,4,5,6,7,8 , and 9 taken all at a time are such that digit 1 appearing somewhere to the left of 2 and digit 3 appearing to the left of 4 and digit 5 somewhere to the left of 6 , is (e.g. 815723946 would be one such permutation)

If A={1,2,3,4,5,6,7,8} and B={1,3,4,6,7,8,9} then