# Number Series Questions for SBI PO, Syndicate Bank PO and Canara Bank PO 2018 Set-4

February 2, 2018

**Direction (Q.1-5): What will come in place of the question mark (?) in the following number series?**

**Q.1 132, ?, 336, 120, 24, 0**

(A) 616

(B) 720

(C) 525

(D) 728

(E) 632

**Q.2 441, 433, 410, 364, ?, 171**

(A) 326

(B) 359

(C) 295

(D) 287

(E) None of these

**Q.3 0.5, 4, 20, 86, 352, ?**

(A) 1418

(B) 1620

(C) 1515

(D) 1502

(E) None of these

**Q.4 8, 40, 65, 325, 350, ?**

(A) 1840

(B) 1645

(C) 1756

(D) 1780

(E) None of these

**Q.5 1612, ?, 588, 1540, 1348, 388**

(A) 1604

(B) 1536

(C) 1454

(D) 1645

(E) None of these

**Answer 1. (B) 720**

**Explanation:**

Pattern |
Series |

(11)^{3} − 11 |
1320 |

(9)^{3} − 9 |
720 (✓) |

(7)^{3} − 7 |
336 |

(5)^{3} − 5 |
120 |

(3)^{3} − 3 |
24 |

(1)^{3} − 1 |
0 |

**Answer 2. (D) 287**

**Explanation:**

Series |
Pattern |

441 | 441 |

441 − (3^{2} − 1) |
433 |

433 − (5^{2} − 2) |
410 |

410 − (7^{2} − 3) |
364 |

364 − (9^{2} − 4) |
287 (✓) |

287 − (11^{2} − 5) |
171 |

**Answer 3. (A) 1418**

**Explanation:**

Pattern |
Series |

0.5 | 0.5 |

0.5 × 4 + 2 | 4 |

4 × 4 + 4 | 20 |

20 × 4 + 6 | 86 |

86 × 4 + 8 | 352 |

352 × 4 + 10 | 1418 (✓) |

**Answer 4. (E) None of these**

**Explanation:**

Series |
Pattern |

8 | 8 |

8 × 5 | 40 |

40 + 25 | 65 |

65 × 5 | 325 |

325 + 25 | 350 |

350 × 5 | 1750 (✓) |

**Answer 5. (A) 1604**

**Explanation:**

Series |
: |
1612 | 1604 | 1588 | 1540 | 1348 | 388 | |||||

Pattern |
: |
8 | 16 | 48 | 192 | 960 | ||||||

× 2 | × 3 | × 4 | × 5 |