Salman told Sachin, “The day before yesterday I met the only brother of the daughter of my father’s mother.” Whom did Salman meet?

To determine whom Salman met, let's break down the statement step by step:

1. Identify Salman’s father’s mother:

   • Salman’s father’s mother is Salman’s grandmother.

2. Identify the daughter of Salman’s grandmother:

   • The daughter of Salman’s grandmother is Salman’s aunt or Salman’s mother.

3. Identify the only brother of the daughter of Salman’s grandmother:

   • If the daughter is Salman’s mother, then the only brother of Salman’s mother is Salman’s maternal uncle.
   • If the daughter is Salman’s aunt, then the only brother of Salman’s aunt is Salman’s father.

Since the statement specifies "the only brother," it implies there is only one brother. Given that Salman is referring to his own family, it is more likely that the daughter is his mother, and the only brother of his mother is his maternal uncle.

Therefore, Salman met his maternal uncle.