Number Series asked in IBPS RRB Scale-1 PO Prelims Exam Held on 4th Nov 2016 (All Slots)

Number Series asked in IBPS RRB Scale-1 PO Prelims Exam Held on 4th Nov 2016 (All Slots)

Dear Readers, IBPS RRB Scale-1 PO Prelims Exam 4th Nov 2016 (All Slots) has finished, here we have given Memory based Number Series questions. Candidates those who are all going to write the examination can check this pattern and make use it.

Number Series Questions asked in 4^th Nov Slot-I:

1). 4, 4, 6, 12, 24, ?

Solution: (Difference of Difference)

2). 3, 1.5, 1.5, 2.25, 4.5, ?

Solution: 

×0.5, ×1, ×1.5, ×2, ×2.25

Answer is- 11.25

3). 2, 4, 11, 37, 153, ?

Solution: 

(2×1)+2=4

(4×2)+3=11

(11×3)+4=37

(37×4)+5=153

(153×5)+6=771

Answer is- 771

4). 9, 14, 21, 32, 45, ?

Solution: (Difference)

 

5). 3, 10, 22, 39, 61, ?

Solution: (Difference)

Number Series Questions asked in 4^th Nov Slot-II:

1). 2, 7, 14, 25, 38, ?

Solutions : Difference of Difference

2+5 (5+2) = 7

7+7 (7+4) = 14

14 + 11(11+2) = 25

25+ 13 (13+4) = 38

38 + 17 (17+2) = 55

2). 6, 6, 8, 14, 26, ?

Solutions: Difference of Difference – 2,4,6,8 

6+0 (0+2) = 6

6+2 (2+4)= 8

8+6 (6+6)= 14

14+12 (12+8) = 26

26+20 (20+10) = 46

3). 3, 5, 13, 43, 177, ?

Solutions:

13×3+4=43

43×4+5=177

177×5+6=891

Answer: 891

4). 4, 2, 2, 3, 6, ?

Solutions:

X0.5, x1, x1.5, x2, x2.5… = 15

5). 3, 9, 22, 42, 69, ?

Solutions : Difference of Difference

9+13 (6+7) = 22

22+20 (13+7) = 42

42+27 (20+7) = 69

69+34 (27+7) = 103

Number Series Questions asked in 4^th Nov Slot-III:

1). 3, 8, 15, 26, 39, ?

Solution: (Difference of prime number)

Answer- 56

2). 5, 5, 7, 13, 25, ?

Solution: (Difference of Difference- 2, 4, 6, 8, 10)

5+0(0+2)=5

5+2(2+4)=7

7+6(6+6)=13

13+12(12+8)=25

25+20(20+10)=45

Answer- 45

3). 5, 11, 24, 71, ?

i. 5+6= 11

(6×2+1³) = 13 Difference of Difference

ii.  11+13= 24

(13×3+2³) = 47 Difference of Difference

iii. 24+47= 71

(47×4+3³) = 215 Difference of Difference

iv. 71+215= 286

Answer-286

4). 1, 3, 9, 31, 129, ?

1×1+2, 3×2+3, 9×3+4, 31×4+5, 129×5+6

Answer- 651

5). 8, 4, 4, 6, 12, ?

8×0.5, 4×1, 4×1.5, 6×2, 12×2.5

Answer- 30

Number Series Questions asked in 4^th Nov Slot-IV:

1).  3, 1.5, 1.5, 2.25, 4.5, ?     

 3×.5= 1.5

1.5×1=1.5

1.5×1.5=2.25

2.25x2 = 4.5

4.5x2.5=11.25.

Answer- 11.25

2).  2, 4, 11, 37, 153, ?         

4×2+3= 11

11×3+4= 37

37x4+5 = 153

153x5+6 = 771

Answer- 771

3).  9, 14, 21, 32, 45, ?           

Difference of Prime No: 5, 7, 11, 13, 15, 17

Answer: 62

4).  4, 4, 6, 12, 24, ?

12+12 = 24

24+20 = 44

Answer- 44

diff of diff 2, 4, 6, 8

5).  4, 3, 4.5, 8.75, 20, ? .                       

4*0.5+1= 3

3*1+1.5= 4.5

4.5*1.5+2=8.75

8.75*2+2.5= 20

20*2.5+3 = 53

Answer- 53

 

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