Answer
See below
Work Step by Step
a) There are 4 equally distributed suits.
$♥, ♠, ♣, ♦$ Thus the answer is $1/4$
b) There are 4 equally distributed suits. Half of the deck is either heart or spades.
$1/2$
c) 3/4 of the deck is either of these suits since the deck is distributed equally.
$3/4$
