A website Maths Puzzle Numerical Ability

Is it possible to prove 0 is neither an odd nor an even number?

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one+one+one=ten
two characters can't have same value.
values can be taken between 0 and 9?
write the values of all characters? What is the minimum energy rquired to launch a satellite of mass m from the surface of the planet of mass M and radius R in a circular orbit of radius 2R