1. 9 x 9 + 9 + 9 + 9/9 = 100 2. "ARANG" Dipohon Sarang , dilaut Karang , ditoko Barang :D 3. 19 kali !! 7,17,27,37,47,57,67,70,71,72,73,74,75,76,77,78,79,87,97 4. PitaA+ PitaB = 28 , pitaA=2/5 pitaB , 2/5+1/1=7/5 Pita B 5/7x28= 20cm , pita a = 2/5 x 20 = 8 cm jadi pita yang paling