1) Calculate: 100-10, 80 a) 8,92 b) 89,2 c) 892 d) 89, 02 2) In which pair are the numbers coprime? a) 14 и 21 b) 40 и 77 c) 28 и 44 d) 9 и 18 3) The number of all numbers 13y53a that are multiples of 15 is: a) 7 b) 6 c) 4 d) 2

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