MCQ
If $36x\ 52y\ 8$ is divisible by $9$, then $x + y$ is
- A$2$
- ✓$3$
- C$4$
- D$5$
✓
Answer
Correct option: B.
$3$
$\because 36x\ 52y\ 8$ is divisible by $9$
$\therefore 3 + 6 + 5 + 2 + 8 + x + y$
$\Rightarrow 24 + x + y$ is divisible by $9$
$24 + (x + y) = 27$
$x + y = 27 – 24 = 3$
$\therefore 3 + 6 + 5 + 2 + 8 + x + y$
$\Rightarrow 24 + x + y$ is divisible by $9$
$24 + (x + y) = 27$
$x + y = 27 – 24 = 3$
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