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1.5 1.75 2 2.25 1.5 is a broken sequence, because of the last term. I believe it was meant to be a 2.5.

If it was written as 1.5, 1.75, 2, 2.25, 2.5 you could write all the terms as fractions with a common denominator of 4 to see.

6/4, 7/4, 8/4, 9/4, 10/4 to see 11/4 comes next, which is equal to 2.75.

Alternatively, you could just see that the decimal increases by 0.25 each time, which is the easiest way.

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10y ago
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Q: What is the next sequence 1.5 1.75 2 2.25 1.5?
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