How do you pronounce 階乘?

Q: How do you pronounce 階乘? A: gaai1 sing4, e.g.

階乘 (gaai1 sing4) — meaning, pronunciation, examples

階乘 (gaai1 sing4, jiē chéng) — the factorial of a number, e.g. 5! = 5.4.3.2.1 = 120

階磚仔 (gaai1 zyun1 zai2) — diamonds (the suit in a pack of playing cards)
階磚 (gaai1 zyun1) — paving tile; diamond (the suit in a pack of playing cards)
階級 (gaai1 kap1) — caste
階 (gaai1) — rank or step; stairs; official hierarchy
階地 (gaai1 deng6) — terrace (geography)
階層 (gaai1 cang4) — social class