Khanwan phon lak khong kan khanwan thang khanit khong sam phinnang ruam duay lamdat thi thuktong.
Khruang Khanwan Sam Phinnang
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Khruang khanwan ni khanwan phon khong kan buak, lop, khun rue har khong sam phinnang ruam. Bon chamnuan kem, tuaeng lae tuasom samrap phinnang raeng laeo lueak kan khanwan rawang phinnang tang.
Lamdat kan khanwan thuknai: kan khun lae har mi lamdat sung kwa kan buak lae lop. Phon sadaeng pen phinnang lod lae chamnuan thasan niyom.
Tua yang: 1/2 + 1/3 x 3/4 = 1/2 + (1/3 x 3/4) = 1/2 + 1/4 = 3/4 = 0.75
