If the stars at the turnoff point of a cluster have a mass of 3 M, what is the age of the cluster?a.3.0 × 1010 yearsb.3.3 × 109 yearsc.6.4 × 108 yearsd.1.6 × 1011 yearse.The age of a star cluster cannot be determined from the mass of stars at the turnoff point.



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