State the cardinality of the following sets.

$\mathrm{C}=\left\{0\right\}$

State the cardinality of given set.

$A=\left\{square numbers less than 6\right\}$

State the cardinality of the following sets.

$\mathrm{B}=\left\{\mathrm{triangle},\mathrm{quadrilateral},\mathrm{pentagon}\right\}$

State the cardinality of given set

State the cardinality of the following set.

The sets of the letters in the word 'MATHEMATICS'

State whether the following is empty set or not.

$\left\{\mathrm{odd} \mathrm{numbers} \mathrm{divisible} \mathrm{by} 2\right\}$

State whether the following is empty set or not.

$\left\{\mathrm{prime} \mathrm{numbers} \mathrm{which} \mathrm{are} \mathrm{even}\right\}$

State which of the following are empty sets.

$\left\{\mathrm{days} \mathrm{with} 1440 \mathrm{minutes}\right\}$

State whether the following is empty set or not.

$\left\{\mathrm{triangle} \mathrm{whose} \mathrm{sum} \mathrm{angle} \mathrm{is} 190°\right\}$