7. A soloist is auditioning for a musical play. If she is required to sing any three of the 7 prepared songs, in how many ways can she make her choice? 1 point * A. 325 B. 320 C. 315 D. 310
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This can be calculated using the combination formula, which is given by: C(n, r) = n! / (r!(n-r)!) where n is the total number of items and r is the number of items to be chosen. In this case, n = 7 (the total number of prepared songs) and r = 3 (the number of Show more…
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