Elitmus Exam Numerical Ability Algebra

39x-18y=1 x and y are the positive integers find the no of solutions .
Option doesn't remember.

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Elitmus Other Question

The herds of deer ____ afraid as they could smell the scent of tigers in the wind.
was
were
became
Find the regular polygon whose interior angel is 150 more than exterior angle. note the total sum of interior and exterior angle should be 180 at one point.
option a.8 b.12 c.16 d.32 e.36