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If a*b denote the bigger among a and b...

If `a*b` denote the bigger among `a` and `b` and if `a b=(a**b)+3` , then `4. 7=`

A

31

B

14

C

10

D

7

Text Solution

Verified by Experts

The correct Answer is:
C
`4 @ 7=(4 * 7)+3`
`=7+3=>10`
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RD SHARMA-BINARY OPERATIONS-Solved Examples And Exercises
  1. Let * be a binary operation on set of integers I , defined by a*b=2...

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  2. If a*b=a^2+b^2, then the value of (4*5)*3 is a*b=a^2+b^2, then the val...

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  3. If a*b denote the bigger among a and b and if a b=(a**b)+3 , then 4...

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  4. If the binary operation * on Z is defined by a*b=a^2-b^2+a b+4 , then ...

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  5. For the binary operation * on Z defined by a ast b=a+b+1 the identit...

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  6. If a binary operation * is defined on the set Z of integers as a ast...

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  7. Q^+ denote the set of all positive rational numbers. If the binary ope...

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  8. If G is the set of all matrices of the form [xxxx] , where x in R-...

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  9. Q^+ is the set of all positive rational numbers with the binary ope...

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  10. If the binary operation o. is defined on the set Q^+ of all positive r...

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  11. Let * be a binary operation defined on set Q-{1} by the rule a*b=a+b...

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  12. Which of the following is true? * defined by a*b=(a+b)/2 is a binar...

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  13. The binary operation * defined on N by a*b=a+b+a b for all a ,\ b i...

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  14. If a binary operation * is defined by a*b=a^2+b^2+a b+1 , then (2*3...

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  15. Let * be a binary operation on R defined by a*b=a b+1 . Then, * is ...

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  16. Subtraction of integers is

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  17. The law a+b=b+a is called

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  18. An operation * is defined on the set Z of non-zero integers by a*b=a/...

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  19. On Z an operation * is defined by a * b=a^2+b^2 for all a ,\ b in Z...

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  20. A binary operation ast on Z defined by a ast b=3a+b for all a ,\ b i...

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