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Show that addition and multiplication ar...

Show that addition and multiplication are associativé binary operation on `R`. But subtraction is not associative on `R`. Division is not associative on `R`.

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V PUBLICATION-RELATIONS AND FUNCTIONS-QUESTION BANK
  1. Show that +: R xx R rarr R and xx: R xx R rarr R are commutative binar...

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  2. Show that *: R xx R rarr R defined by a * b=a+2 b is not commutative.

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  3. Show that addition and multiplication are associativé binary operation...

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  4. Show that * :R xx R rarr R given by a* b= a+2 b is not associative.

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  5. Show that zero is the identity for addition on R and 1 is the identity...

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  6. Show that - a is not the inverse of a in N for the addition operation ...

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  7. Determine whether or not each of the definitions of ** given below giv...

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  8. For each binary operation ** defined below, determine whether ** is co...

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  9. Consider the binary operation on a set {1,2,3,4,5}. defined by a ^^ b=...

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  10. Consider the binary operation ** on the set A= {1,2,3,4,5} given by th...

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  11. Let **' be the binary operation on N given by a**'b= L.c.m. of a and b...

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  12. Consider an operation ** defined on the set A={1,2,4,8} by a**b=LCM ...

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  13. Let ast be a binary operation on N defined by aastb=HCF of a and b I...

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  14. Let ** be a binary operation on the set Q of rational numbers as follo...

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  15. Let A=NtimesN and ast be a binary operation on A defined by (a,b)...

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  16. State whether the following statements are true or false. Justify For...

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  17. Consider a binary operation ** on N defined as a**b=a^3+b^3. Choose th...

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  18. If R1 and R2 are equivalence relations in a set A, show that R1 nn R2 ...

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  19. Let X={1,2,3,4,5,6,7,8,9}. Let R1 be a relation in X given by R1={(x, ...

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  20. Let f: X rarr Y, be a function. Define a relation R in X given by: R={...

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