257, 178, 259, 173, 261, 168, 263, 163, ?, ?Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What are the next two numbers in this series?
257, 178, 259, 173, 261, 168, 263, 163, ?, ?
Odd-positioned (first, third, fifth, seventh, ninth...) numbers increase by 2, while even-positioned (second, fourth, sixth, eighth, tenth...) numbers decrease by 5.
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