May 02, 2019

Number series for SBI, IBPS, SSC. RRB and RBI exams #3

Number series for SBI PO SBI clerk IBPS PO IBPS clerk SSC CGL CHSL and RRB NTPC exams 


Directions: What will come in place of ?

  1. 62, 127, 214, 345, 510, ?
  2. 3, 7, 13, 19, ?
  3. 3, 7 17, ?
  4. 12, 13, 15, 17, ?
  5. 1, 3, 4, 8, 15, 27,?
  6. 0.5, 1.5, 4.5, 13.5,?
  7. 840, 168, 42, 14, 7, ?
  8. 240, ...?..., 120, 40, 10, 2
  9. 0, 6, 24, 60, 120,?
  10. 512, 16, 343, 25, ?

Answers

  1. (43 – 2) (53 + 2) (63 – 2) (73 + 2) (83 – 2) (93 + 2) = 731
  2. 3, 5, 7, 11, 13, 17, 19, 23, 29 
  3. 3, 5, 7, 11, 13, 17, 19, 23, 29, 31 
  4. (2 + 10), (3 + 10), (5 + 10), (7 + 10) (11 + 10) = 21
  5. 1 + 3 + 4 = 8, 3 + 4 + 8 = 15, 4 + 8 + 15 = 27, 8 + 15 + 27 = 50 
  6. 0.5 * 3; 1.5 * 3; 4.5 * 3; 13.5 * 3 = 40.5 
  7. (840 ÷ 5) = 168, (168 ÷ 4) = 42, (42 ÷ 3) = 14, (14 ÷ 2) = 7, (7 ÷1) = 7
  8. 240 ÷ 1 = 240, 240 ÷ 2 = 120, 120 ÷ 3 = 40, 40 ÷ 4 = 10, 10 ÷ 5 =2
  9. 13 – 1 = 0, 23 – 2 = 6, 33 – 3 = 24, 53 – 5 = 120, 63 – 6 = 210 
  10. 83, 42, 73, 52, 63 = 216 

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