What is the missing number in the sequence 1-8-27-x-125-216?

Answer 1

64.

Answer 2

64. It should be between 27 and 125.

The pattern is the series of cubes of integers: 13=1, 23=8, 33=27, and 43=64.

Sixty-four (64). It is the number sequence: 1,2,3,4,5,6 etc cubed.

* 1 cubed is 1 (1 x 1 x 1 = 1),

* 2 cubed is 8 (2 x 2 x2 = 8),

* 3 cubed is 27 (3 x 3 x 3 = 27),

* 4 cubed is 64 (4 x 4 x 4 = 64),

* 5 cubed is 125 (5 x 5 x 5 = 125) and

* 6 cubed is 216 (6 x 6 x 6 = 216).
64 because each number is cubed
It is 64 because 43 = 64

Answer 3

Nine (9) is the missing number in this group.