Analytical Interview Question:

Please give the missing letter of the following 5 6 _ 87 412 2185?

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The answer is 20.

The series follows in this fashsion:

5

6 = (5 * 1) + (1^3)

20 = (6 * 2) + (2^3)

87 = (20 * 3) + (3^3)

412 = (87 * 4) + (4^3)

2185 = (412 * 5) + (5^3)
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