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Three aliens and three astronauts need to travel
from Mars to Earth safely, but they only have one
ship!
A maximum of two beings are allowed in the ship
for each trip. The astronauts must never be
outnumbered by the aliens on either planet. The
ship will not fly if there is no astronaut in it.
Can you help all six beings make it back to
Earth?

Respuesta :

vane3santos
I would say leave the aliens at mars and astronaut A would drive first trip and o drop off astronaut B, the A goes back to pick up astronaut C.

But in this case, All astronaut should be dropped off first and then Astronaut A would go back 3 times for all aliens therefore it won't be outnumbered when A comes back with alien 3.

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