Quantitative Analysis and Numerical Reasoning Part 5





Number Series and Sequence
  1. 2/5 : 4/7 : 6/9 : 8/11 : _____
1)   11/14
2)   10/13
3)   12/15
4)   10/15
5)   11/13

Ans: 2) numerator: n+2, denominator: n+2

  1. 1½ : 2 2/3 : 3¾ : 4 4/5
1)   5 5/6
2)   5 4/5
3)   6 6/7
4)   4 5/7
5)   6 5/7

Ans: 1) all numbers, n+1

  1. 2, 5, 4, 10, 6, 15, 8, __, __,
1)   20, 10
2)    10, 20
3)   10, 10
4)    20, 20
5)   8, 10

Ans: 1) even number: n+2

  1. 10, 5, 20, 10, 60, 30, 240, 120, 1200, __, __,
1)   600, 400
2)   120, 600
3)   600, 7200
4)   1200, 7200
5)   120, 580

Ans: 3) (10 x 2; n x 3, n x 4…….)
            (15 + 2), (17 + 2), (19 + 2)….

  1. 10, 15, 9, 17, 8, 19, 7, __, __,
1)   21, 7
2)   21, 6
3)   20, 6
4)   20, 7
5)   21, 23

Ans: 2) (10 – 1), (9 – 1), (19 + 2)


  1. 25, 23, 36, 34, 49, 47, 64, __, __,
1)   62, 79
2)   60, 80
3)   62, 82
4)   60, 81
5)   62, 81

Ans: 5) 5

  1. 721, 521, 711, 531,701, 541, __, __,
1)   691, 550
2)   690, 551
3)   692, 551
4)   691, 551
5)   691, 552

Ans: 4) 721 – 10, n-10
            521 + 10, n+10

  1. 148/450, 158/440, 168/430, 178/420, ___, ___,
1)   188/410, 198/400
2)   188/400, 188/410
3)   188/400, 198/400
4)   188/420, 188/430
5)   188/400, 198/410

Ans: 1) numerator: 148 + 10, n+10, denominator: 450 – 10, n-10

  1. 1.15, 2.25, 3.35, 4.45, _____,
1)   5.15
2)   5.45
3)   5.50
4)   4.50
5)   5.55

Ans: 5) 1.15; (n + 1.10)

  1. 75, 125, 100, 175, 125, 225, ___, ___,
1)   150, 275
2)   150, 250
3)   175, 275
4)   175, 250
5)   175, 265

Ans: 1st -3rd -5thnos….(n + 25): 2nd -4th -6th nos…..(n + 50)

  1. 14, 15, 19, 20, 25 ,26, 32, 33, ___, ___,
1)   39, 42
2)   39, 40
3)   40, 41
4)   38, 41
5)   38, 40

Ans: 3) 1st -3rd -5th nos…..(n + 5.(n + 6), (n + 7) …..
            2nd -4th -6th nos…..(n + 5), (n + 6), (n + 7) …..

  1. 48, 48, 53, 43, 59, 37, ___, ___,
1)   65, 30
2)   65, 31
3)   66, 36
4)   66, 31
5)   66, 30

Ans: 5) 48 + 5 (n + 6, n + 7 ……)     
            48 – 5 (n – 6, n – 7……)

  1. .06, .08, .12, .06, .36, .04, ___, ___,
1)   1.42, .02
2)   1.42, .0
3)   1.44, .04
4)   1.44, .02
5)   1.44, .0

Ans: 4) (.06 x 2), (n x 2) (.08 – 2), (n – 2)

  1. 78, 45, 70, 53, 62, 61, ___, ___,
1)   54, 68
2)   54, 69
3)   54, 70
4)   53, 69
5)   53, 70

Ans: 2) (78 – 8); (n – 8); (45 + 8); (n + 8)

  1. .001, .0011, .0001, .00111, .00001, ____, ____,
1)   .001111, .000001
2)   .000111, 00001
3)   .0001111, .0000
4)   .00111, .00001
5)   .00111, .000011

Ans: 1) 1st -3rd -5th nos ….. adding more 0’s
            2nd -4th -6th nos ….. adding more 1’s

  1. 2.5, 4.5, 4, 6, 5.5, 7.5, ___, ___,
1)   7,8
2)   9, 9.5
3)   7.5, 9.5
4)   9.5, 9.0
5)   8.5, 9.5

Ans: 1) n + 1.5

  1. 3 12/19, 4 13/20, 5 14/21, 6 16/22, ____, ____,
1)   6 15/22, 7 15/22
2)   7 15/23, 8 16/24
3)   7 15/22, 8 15/22
4)   7 15/22, 8 16/22
5)   7 16/23, 8 17/24

Ans: 5) 3 12/19 + 1 1/1

  1. 675, 430, 475, 630, ___, ___,
1)   230, 830
2)   330, 730
3)   730, 790
4)   275, 830
5)   270, 830

Ans: 4) n + 200, n – 200

  1. 341, 452, 563, ___, ___,
1)   675, 784
2)   674, 784
3)   675, 786
4)   675, 785
5)   674, 785

Ans: 5) each digit + 1

  1. 879, 768, 657, 546, ____, ____,
1)   437, 323
2)   435, 324
3)   547, 324
4)   556, 768
5)   438, 768

Ans: each digit decreases by 1

  1. 38, 67, 43, 72, 49, 78, ____, ____,
1)   57, 86
2)   56, 85
3)   57, 87
4)   56, 86
5)   56, 84

Ans: 2) (n + 5), (n + 6), (n + 7)…

  1. -4, -16, -64, -256, ____, ____,
1)   -1024, -4097
2)   -1025, -4097
3)   -1024,- 4096
4)   -1023, -4098
5)   -1025, -4098

Ans: 3) (-n x 4)

  1. 438, 698, 548, 588, 658, ___, ___,
1)   478, 768
2)   478, 868
3)   488, 768
4)   478, 878
5)   488, 778

Ans: 1) (n + 110), (n – 110)

  1. AZ, CX, EV, GT, ___, ___,
1)   IR, KP
2)   IS, KQ
3)   IS, KP
4)   IR, KQ
5)   IS, KR

Ans: 1) every other letter of the alphabet from the beginning together with the other letters starting from the end.

  1. AC, BD, EG, FH, ____, ____,
1)   IL, HI
2)   IK, JL
3)   HI, JK
4)   IJ, KL
5)   IJ, KM

Ans: 2) 1st and 3rd letters together, 2nd and 4th letters, 5th and 7th and so on and so forth.

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