6. Mr Brook has 2 pieces of wood for his dama board one has a wi of 18 cm and the other has 20 cm. I both sizes of wood are to be out into dama chips of the same width without wasting any wood, what is the greatest width into which the woods can be cut? a1 12 c3 7. The pupils of Valencia City Central School collected used bottles for recycling. They arranged the bottles in boxes of 5 and 6. What is the least number of bottles the pupils have collected? a 5 b. 6 c. 10 d. 30 8. What is the LCM of 15 and 100? a. 400 b. 300 C 200 d 100 9. What is the GCF of 14 and 21?