Examine whether the following statements are true or false :
$\{a\} \subset\{a, b, c\}$
True. Each element of $\{a\}$ is also an element of $\{a, b, c\} .$
Which set is the subset of all given sets
Write the following sets in roster form :
$D = \{ x:x$ is a prime number which is divisor of $60\} $
$\{ x:x$ is an even natural number less than $6\} \subset \{ x:x$ is a natural mumber which divide $36\} $
Write the following sets in the set-builder form :
$\{ 3,6,9,12\}$
If a set $A$ has $n$ elements, then the total number of subsets of $A$ is
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