Are the force of action and reaction always equal in magnitude?

The forces of action and reaction are

The forces of action and reaction are

The forces of action and reaction act on

Though the force of action and reaction are equal and opposite, yet the acceleration produced by them may be of different magnitudes. Why?

Since action and reaction are always equal in magntiude and opposite in direction, how can anything ever be accelerated?

(a)Forces of action and reaction are always equal and opposite. Is it true? (b)Do forces of action and reaction act on the same body or on two different bodies?

(a)Do the forces of action and reaction cancel eachother? (b)Do the forces of action and reaction alwys produce accelerations of same magnitude?