Question 83

Find the missing (?) in the series: 1, 1, 8, 4, 27, 9, ?, 16

Solution

1, 1, 8, 4, 27, 9, ?, 16

It contains two alternate series

1, 8, 27, ? (cube of the numbers)

1, 4, 9, 16 (square of the numbers)

so,

1, 8, 27, $$4^3 = 64$$ (cube of the numbers)

1, 4, 9, 16 (square of the numbers)

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