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find total number of ordered pairs (x,y) satisfying xy=19! and HCF (x,y)=1

find total number of ordered pairs (x,y) satisfying xy=19! and HCF (x,y)=1

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
2 years ago
1, 19!
11, 19!/11
13, 19!/13
17,19!/17
19,18!

5 total pairs

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