A) 7, 7, 15, 20
B) 7, 8, 15, 20
C) 7, 8, 5, 10
D) 7, 8, 16, 10
Correct Answer: C
Solution :
15 - 2 = 13, 13 - 2 = 11, 11 ? 2 = 9, 9 - 2 = 7 20 ? 3 = 17, 17 ? 3 = 14, 14 ? 3 = 11, 11 ? 3 = 8 25 ? 5 = 20, 20 ? 5 = 15, 15 ? 5 =10, 10 ? 5 = 5 50 ? 10 = 40, 40 - 10 = 30, 30 ? 10 = 20, 20 ? 10 = 10You need to login to perform this action.
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