81,69,58,48,39, next order
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Answer:
Next number = 31
Step-by-step explanation:
81,69,58,48,39, ?
Let the number be x.
81 - 69 = 12
69 - 58 = 11
58 - 48 = 10
48 - 39 = 9
39 - x = 8
39 - 8 = x
x = 31
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