Q: Is Poseidon similar to the god Vulcan?
A: no
Explanation: Poseidon is the Greek god of the sea and water, and is the brother of Zeus. Neptune is the Roman god of the sea. Hephaestus is the Greek god of fire. Hephaestus's ROman equivalent is Vulcan, the Roman god of fire.

Q: Would someone pay for a coffee in NYC with Euros?
A: no
Explanation: New York City is located within the United States. The currency used in the United States is the United States dollar, not the Euro.

Q: Could boolean algebra be described as binary?
A:
yes
Explanation: Binary options tend to have 2 instead of 10 as a base. Binary directly describes something composed of 2 things.