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If A= {1,2,3} ,B= {1,2) and ={1,2} whic...

If `A= {1,2,3} ,B= {1,2) and ={1,2} which one of the following is correct ?

A

`(Axx B ) nn (B xx A) = (A xx C ) nn (B xx C)`

B

`(A xx B ) uu (B xx A ) = (A xx B ) uu (B xx C )`

C

`(A xx B ) nn (B xx A) = (C xx A) nn (C xx B)`

D

`(A xx B) uu (B xx A) = (A xx B) uu (A xx C )`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • If A={1,2,3}, B={1,2} and C={1,2} , which one of the following is correct ?

    A
    `(A xx B) nn (BxxA) = (Axx C) nn (B xxC)`
    B
    `(AxxB) uu (BxxA)=(AxxB)uu(BxxC)`
    C
    `(AxxB)nn(BxxA)=(CxxA)nn (CxxB)`
    D
    `(AxxB) uu (Bxx A) =(AxxB) uu (AxxC)`

  • Let A = {1, 2, 3} and B={2, 3, 4} , then which of the following relation from A to B is a function from A into B

    A
    {(2, 2), (1,3), (2,4), (3,2)}`
    B
    {(1, 4), (2,4), (3, 4)}
    C
    {(2, 2), (3, 4)}
    D
    {(1, 2),(2, 3), (3, 4),(3, 3)}

  • At constant T and P which one of the following statements is correct for the reaction : CO(g) + (1)/(2) O_(2)(g) rarr CO_(2)(g)

    A
    `Delta H = Delta U`
    B
    `Delta H lt Delta U`
    C
    `Delta H gt Delta U`
    D
    `Delta H` is independent of the physical state of the reactant of that compound

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