This is good topic for study for those who have not done so.
Tarot also follow the rule of numbers just like the numerology.
Once you understand the relation the explanation comes easy and fast.

Each Minor Aracan  suit is associated with an area of life all the cards are numbered as well each of these numbers has meanings.

aces: new beginnings opportunity
twos: balance duality a crossroads or choice
threes: the full expression of the suit achievement.
fours: structure stability stagnation
fives: instability conflict loss opportunity for change
sixes : communication problem-solving cooperation
sevens: reflection assessment motives
eights: movement action change power
nines: fruition attainment
tens : completion end of a cycle

then we have the all power 4 suits which add favor to the numbers

and we cant leave out the hebrew 22   the major arcana

and the all powerful 12 number system within  astrology

Refer to one of the books by Dusty Bunker in which she connects numerology with tarot and astrology.