Choose the correct options for the following questions.
If E={ }, then P(E)=
Difficulty: Easy
A:
$\phi$
B:
{ }
C:
{{2}, {4}, {6},....}
D:
${\phi}$
If D= {a} then P(D)=
Difficulty: Easy
A:
{a}
B:
$\phi$
C:
${\phi, {a}}$
D:
${\phi , a}$
If $Q={x\x=1/y, y\:\epsilon\:N}$, then
Difficulty: Easy
A:
$2\:\epsilon\:Q$
B:
$1\:\epsilon\:Q$
C:
$3\:\epsilon\:Q$
D:
$0\:\epsilon\:Q$
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