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Let * be a binary operation defined b...

Let * be a binary operation defined by `a*b=3a+4b-2` . Find 4*5.

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`a*b=3a+4b-2=3 xx 4+xx5-2`
`=12+20-2`
`=20`
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RD SHARMA-BINARY OPERATIONS-Solved Examples And Exercises
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  2. Let +6 (addition modulo 6) be a binary operation on S={0,\ 1,\ 2,\ ...

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  3. Let * be a binary operation defined by a*b=3a+4b-2 . Find 4*5.

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

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

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

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

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

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

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

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

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

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