The following questions refer to the sketch of the H-R diagram below.Please choose the best answer in each case,i.e. ,choice (a)refers to the entire main sequence,while (c)and (d)refer to only small parts of the main sequence.If choice (c)or (d)offers a better answer to a particular question than (a),use the best choice.You may use the same choice more than once.

-Which group represents the most common type of stars?
Correct Answer:
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Q68: Refer to the choices in the table
Q69: Refer to the choices in the table
Q70: Earth is about 150 million km from
Q71: Refer to the choices in the table
Q72: Refer to the choices in the table
Q74: Refer to the choices in the table
Q75: Two stars,Tom and Jerry,have the same spectral
Q76: Refer to the choices in the table
Q77: Refer to the choices in the table
Q78: Which has a greater luminosity,a star with
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