What is the largest integer $$\(N\)$$ for which $$\(7 x+11 y=N\)$$ has no solution in non-negative integers $$\((x, y)\)$$ ?

A.
66
B.
59
C.
70
D.
76
Mathematics
Competition
Math League
Exam No:2018 First Round Grades 10-12 Year:2018 Question No:25

Answer:

B

Knowledge points:

G10-12 - Number Theory - Diophantine Equations

Solution:

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