The sides of a triangle are distinct positive integers in an arithmetic progression. If the smallest side is $10$, the number of such triangles is
The sides of a triangle are distinct positive integers in an arithmetic progression. If the smallest side is $10$, the number of such triangles is
- [KVPY 2012]
- A
$8$
- B
$9$
- C
$10$
- D
infinitely many
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