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Is the set A = {-2, -4, -6, -8,…………..} c...

Is the set A = {-2, -4, -6, -8,…………..} closed,
under subtraction

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Is the set A = {-2, -4, -6, -8,…………..} closed, under addition

Is the set A = {-2, -4, -6, -8,…………..} closed, under multiplication? Given at least three example in each case.

Is the set of integers closed under the operation of substraction? Give examples

Is the set of natural numbers N closed under the operation subtraction? Is the set of integers also closed under this operation?

State which of the following sets are closed under the operation : subtraction R,Z,N,Q,W,C,R-{0}

Is the set of integers closed under the operation of Multiplication? Give examples

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If R = {2, 4, 6, 8} S = {3, 4, 6, 7} T = {1, 2, 3, 4} are three subsets of the Universal set U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} then prove S-T=S nn T'

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ASHOK PUBLICATION ASSAM-Rational Numbers-EXAMPLE
  1. Carry out the operation of addition using additive inverse: 434 + -2...

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  2. Carry out the operation of addition using additive inverse: 99 + -99...

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  3. Is the set A = {-2, -4, -6, -8,…………..} closed, under addition

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  4. Is the set A = {-2, -4, -6, -8,…………..} closed, under subtraction

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  5. Is the set A = {-2, -4, -6, -8,…………..} closed, under multiplication?...

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  6. Examine which of the following are rationals and which are not: frac...

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  7. Examine which of the following are rationals and which are not: frac...

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  8. Examine which of the following are rationals and which are not: -fra...

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  9. Examine which of the following are rationals and which are not: frac...

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  10. Examine which of the following are rationals and which are not: frac...

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  11. Examine if the following are rationals or not: frac(sqrt4)(sqrt36)

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  12. Examine which of the following are rationals and which are not: 1.3

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  13. Examine which of the following are rationals and which are not: 7.77...

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  14. Examine which of the following are rationals and which are not: 1.14...

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  15. Examine which of the following are rationals and which are not: 0.14...

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  16. Find the product using the property or properties mentioned in braket ...

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  17. Find the product using the property or properties mentioned in braket ...

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  18. Find the product using the property or properties mentioned in bracket...

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  19. Is frac(K)(0)= alpha a rational or irrational?

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  20. Is pi a rational or irrational? Justify your answer.

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