Find the odd one out 13, 41,43, 47, 53, 61, 71, 73, 81? A) 61 B) 71 C) 73 D) 81 Solution Each number is prime except 81. Related MCQs: Find the odd one out: 10, 25, 45, 54, 60, 75, 80? Find the odd one out: 8, 27, 64, 100 125, 216, 343? Find the odd one in the series: 835, 734, 842, 761, 853, 981, 532? Which is the odd number in the following numbers: 8, 27, 64, 100, 125, 216, 343