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Question:

Who among the following is DEFINITELY an expert in tabla but not in either mridangam or ghatam?

Explanation:

We can draw the following Venn diagram based on the information given in the main paragraph.

D is an expert in both tabla and ghatam.
Since I is neither an expert in tabla nor in mridangam hence, he is an expert in ghatam
∴ D and I are the only two experts in ghatam.

Now, J is not an expert in tabla hence, he can only be an expert in mridangam only.

Also, H is not an expert in mridangam hence, he can only be an expert in tabla only.

Both A and B are experts in mridangam, but only one of them is also an expert in tabla.
Both F and G are experts in tabla, but only one of them is also an expert in mridangam.

There are two experts in tabla and mridangam only one of them is either A or B and the other is either F or G.

∴ We can make the following Venn diagram

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∴ H is an expert in tabla only.

Hence, option (c).