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If a Binary Operation * is Defined on the Set Z Of Integers As A * B = 3a − B, Then the Value of (2 * 3) * 4 is - Mathematics

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Question

If a binary operation * is defined on the set Z of integers as a * b = 3a − b, then the value of (2 * 3) * 4 is ___________ .

Options

  • 2

  • 3

  • 4

  • 5

MCQ
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Solution

5
Given: a * b = 3a − b
2 * 3 = 3 (2) \[-\] 3
         = 6 \[-\] 3
         = 3

(2 * 3) * 4 = 3 * 4
         = 3 (3) \[-\] 4 

         = 9 \[-\] 4

         = 5

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Chapter 3: Binary Operations - Exercise 3.7 [Page 37]

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RD Sharma Mathematics [English] Class 12
Chapter 3 Binary Operations
Exercise 3.7 | Q 6 | Page 37

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