Mathematics, 20.01.2020 23:31, yfnal3x

In a survey of 480 students, 253 indicated that play the piano, 268 indicated that they play the harp and 73 indicated they play the piano and the harp. 1. how many students surveyed play the harp only?

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In a survey of 480 students, 253 indicated that play the piano, 268 indicated that they play the har...