Mfano 1
Kamilisha jedwali
[ 9 · 45 · 225 ] [ 11 · 55 · 275 ] [ 7 · 35 · ? ]
Jibu sahihi: D
Jinsi ya kulitatua
Soma kila safu mlalo kutoka kushoto kwenda kulia: kila namba ni ile iliyotangulia × 5. Safu mlalo ya 1: 9 → 45 → 225. Safu mlalo ya 2: 11 → 55 → 275. Safu mlalo ya 3: 7 → 35 → 35 × 5 = 175.