Two stars (a and b) in a binary system have apparent V-band magnitudes of 8.0 and 8.4 mag, and B-V colour indices of 0.3 and -0.5 mag, respectively. (a) Which star is brightest in the V-band? (b) Which star is brightest in the B-band? (c) Which star would appeal bluer to the naked eye? (d) What is the ratio
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