Choose the correct preposition: She is good __________ Mathematics.
Aat
Bin
Cwith
Don
Answer & Solution
Correct answer: A. at
1. "Good at + (subject/skill)" is the standard preposition.
2. "Good in Mathematics" sounds non-standard; "good at" is preferred.
_Source: TSICET 2024 PYQ Q.170 (Shift 1, Prepositions)_
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