Solution:
\[\left( iii \right)\] Number of red cards in a deck \[=\text{ }26\]
The number of favourable outcomes for the event of drawing a red card \[=\text{ }26\]
Then, probability of drawing a red card \[=\text{ }26/52\text{ }=\text{ }{\scriptscriptstyle 1\!/\!{ }_2}\]
\[\left( iv \right)\] There are \[52\] cards in a deck of cards, and \[12\] of these cards are face cards (\[4\]kings, \[4\]queens and \[4\] jacks).
The number of favourable outcomes for the event of drawing a face card \[=\text{ }12\]
Then, probability of drawing a face card \[=\text{ }12/52\text{ }=\text{ }3/13\]