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Which is null set?...

Which is null set?

A

a){0}

B

b)`{phi}`

C

c)`{x : x in I and 4 lexle5}`

D

d)`{x:x in R and x^2+9=0}`

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Knowledge Check

  • State which of the following is a null set?

    A
    {0}
    B
    `{phi}`
    C
    {x:x is an integer and `1 ltx lt 2}`
    D
    `{x: x " is a real number and " 1 lt x lt 2}`

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