Fpb ni apa ye?
Oh... Faktor Sepunya Terbesar (FSTB) / Faktor Persekutuan Terbesar
Lain-lain sekolah lain-lain istilah yang digunakan. Kalau aliran Inggeris lagi lah lain, GCF (Greatest Common Factor)


Alright, to find the GCF of 18 and 40, you have to apply the technique of simultaneous repetitive division by a number, til the remainder cannot be divided by the same number anymore.

2 | 18 , 40
   | 9 , 20 ---> these two numbers cannot be divided by 2 simultaneously anymore

So, the GCF of 18 and 40 is 2.