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  • Angelie Soto thinks this is interesting:

You can have multiple route tables, and the same route table can be associated to one or more subnets. Each subnet can only be associated to a single route table. All VMs in a subnet use the route table associated to that subnet

From

Cover of Exam Ref 70-533 Implementing Microsoft Azure Infrastructure Solutions

Note

Route table to multiple subnets and one Subnet one route table. Vms are associated to the route table though the subnet they belong to.