Question

2,2.5,3.75,6.56,13.12,29.58,?

Answer 1

Answer:

57.11

Step-by-step explanation:

2        2.5        3.75       6.56          13.12         29.58         57.11

  2.3        3.5         2.81          6.56          16.46         27.53

        3.27       -0.69      3.75         9.90            11.07

              -3.96        4.44         6.15        1.17

                      8.4            1.71           -4.98

                              -6.69       -6.69

carrying out difference at each level we get something above.

So the missing number in sequence is 57.11 for 2, 2.5, 3.75, 6.56, 13.12, 29.58, ?.