→ kombinatorik ←
Banyak persegi panjang pd gambar
= 3C2 . 6C2 + 3C2 . 4C2 - 3C2 . 3C2
= 45 + 18 - 9
= 54 ✔
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Verified answer
→ kombinatorik ←
Banyak persegi panjang pd gambar
= 3C2 . 6C2 + 3C2 . 4C2 - 3C2 . 3C2
= 45 + 18 - 9
= 54 ✔