Question

4, 2.5, 3.5, 6.5, 15.5, 41.25, 126.75 find the wrong number
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Answer 1

Answer:

6.5 is the wrong number

4 * 0.5 + 0.5 = 2.5

2 * 1 + 1 = 3.5

3.5 * 1.5 + = 6.75

6.75 * 2 + 2 = 15.5

15.5 * 2.5 + 2.5 = 41.25

41.25 * 3 + 3 = 126 .75.

So the wrong number is 6.5.