Explanation:
The level of a node in Binary tree or generic tree can be defined as the number of connection between the root node and the node +1.
The number of levels in a tree is known as the height of the tree.So more the number of levels more is the height of the tree.
Each level can contain 1 or more nodes.
Answer:
Bluetooth
Explanation:
Bluetooth is a standard to share data between Mobil devises, typically less than 10 m (33 ft), up to 100 m (330 ft), but the Bluetooth 5.0 has a range of 40–400 m (100–1,000 ft), in addition, NFC is something similar because needs a separation of 10 cm or less, and with RFID we can read to hundreds of meters.
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Trig solver. I hope this helped