Sagot :
There are 24 possible tour schedules
Step-by-step explanation:
Let D - Davao
C - Cagayan de Oro
M - Malaybalay
V - Valencia
DCMV CMVD MVDC VDCM
DCVM CMDV MVCD VDMC
DMVC CVDM MDCV VCMD
DMCV CVMD MDVC VCDM
DVCM CDMV MCVD VMDC
DVMC CDVM MCDV VMCD