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In the set of integers under the operati...

In the set of integers under the operation * defined by `a * b =a+b-5` then identity is:

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PREMIERS PUBLISHERS-DISCRETE MATHEMATICS-Problems For Practice
  1. If p is true and q is false, then which of the following is not true?

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  2. p leftrightarrow q is equivalent to:

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  3. In the set of integers under the operation * defined by a * b =a+b-5 t...

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  4. Let p be 'Anand is going to school' q be there are twenty five student...

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  5. Which of the following is a tautology?

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  6. In a set of real numbers an operations * defined by a * b=sqrt(a^(2) +...

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  7. Which of the following is not a binary operation on R?

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  8. Which of the following is/are not statement? (i) Three plus four is ...

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  9. In a compound statement which is made of 4 single statement then the n...

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  10. Which of the following are statement? (i) 7 +2 lt 10 (ii) Set of rat...

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  11. In congruence modulo 5, {x in Z//x=5k +2} represents.

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  12. In (S, **), is defined by x ** y =x where x, y in S, then

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  13. Which one of the following is not a statement?

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  14. If truth value of p is T and q is F then which of the following are ha...

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  15. Show that p vee (~p) is a tautology.

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  16. If the binary operation * is defined a * b=a^(2)-b^(2)+ab+4 then (2 * ...

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  17. In a binary operation * defined as a * b=3a-b then the value of (2 * 3...

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  18. Let A=[{:(,0,1),(,1,1):}],B=[{:(,1,1),(,0,1):}] be any two bollean mat...

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  19. -on Z is:

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  20. Which of the following is not a binary operation on R?

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