The teacher paid for 280 Kč for 4.A students for admission to the exhibition. How many students were on the exhibition?

Correct result:

n =  28


D(280)={1,2,4,5,7,8,10,14,20,28,35,40,56,70,140,280} 15n39 n=202835D(280) = \{ 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280 \} \ \\ 15 \le n \le 39 \ \\ n = 20 | 28| 35

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