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Class 12 Mathematics Relations and Functions Binary operationsEasy

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For the operation (a\ast b=a+2b), what are (2\ast 3) and (3\ast 2), respectively?

Answer and explanation

Correct answer: (8,7)

Step 1: First, (2\ast3=2+2\cdot3=8). Step 2: Then, (3\ast2=3+2\cdot2=7). Step 3: In such operations, changing the order can change the answer.

Related tags

Operation Value Non Commutative Substitution Binary Operations Relations And Functions Mathematics Class 12 Mcq

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