In the sequence, what is the next number? 10, 20, 40, 80, 160, __?
320
Look at the relationship between consecutive terms: 20 ÷ 10 = 2, 40 ÷ 20 = 2, 80 ÷ 40 = 2, and 160 ÷ 80 = 2.
Each term is exactly double the term before it, so the sequence follows a constant multiplication rule of ×2.
Applying this rule to the last given term, the next number is 160 × 2 = 320.
Hence, the answer is 320.
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