Correct Answer - Option 5 : 389

**Given:**

312, 320, 311, 436, 389, 1718

**Calculation:**

Considering the above series, the logic should be

320 - 312 = 8 = (2)^{3}

311 - 320 = -9 = -(3)^{2}

436 - 311 = 125= (5)^{3}

387 - 436 = -49 = -(7)^{2}

1718 - 387 = 1331 = (11)^{3}

After observing the logic we can say the wrong term is 389.

**∴ The wrong term in this series is 389.**