How to pronounce 正數 in Cantonese (3 out of 4):

所以答案是正數才對
So the answer is positive.

Cantonese Sentence Breakdown

所以 so2 ji5
hence
答案 daap6 on3
answer
si6
is
正數 zing3 sou3
positive number
coi4
ability
talent
sb of a certain type
a capable individual
only
only then
just now
a surname
certainly
indeed
deoi3
right
correct
couple
pair
towards
at
for
to face
opposite
to treat (sb a certain way)
to match together
to adjust
to fit
to suit
to answer
to reply
classifier: couple
pair
to compare
to check
to adjust