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OpenStudy (anonymous):
Find the number of pairs of coprime integers (n,m) such that 1≤n≤m≤20. Details and assumptions 2 integers are coprime if their greatest common divisor is 1.
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OpenStudy (anonymous):
Again a question from BRILLIANT...
OpenStudy (anonymous):
yaaaaa!!
Parth (parthkohli):
@shubhamsrg LOL
Parth (parthkohli):
\[\phi(1) + \phi(2) \cdots \phi(20) = 2^{7}\]
Parth (parthkohli):
What level are you on?
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