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a @ b = 2a + b या नियमासाठी, 5 @ 3 ची किंमत काढा.

A11
B16
C19
D13
Answer & Solution
Correct answer: D. 13
5 ची दुप्पट 10 होते आणि त्यात 3 मिळवल्यास 13 मिळते.
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