Sequence and Series (Test 4)

Problem Solving And Reasoning : Mathematics Or Quantitative Aptitude

| Home | | Problem Solving And Reasoning | | Mathematics Or Quantitative Aptitude | | Sequence and Series |

Sequence and Series
| Sequence and Series |
Q.1
Directions: What value should come at the place of question mark (?) in the given number series?
36, 205, 84, 165, 116, ?
A. 125
B. 108
C. 141
D. 137
E. 156
Explaination / Solution:

36       205       84        165      116     (141)
+169      -121     +81      -49      +25

These all differences are squares of the numbers 13,11,9,7,5.

Workspace
Report
Q.2
Directions: What value should come at the place of question mark (?) in the given number series?
35.6, 183, 736, 2211, 4424, ?
A. 4470
B. 8470
C. 6571
D. 4938
E. 4425
Explaination / Solution:

35.6 × 5 + 5 = 183
183 × 4 + 4 = 736
736× 3 × 3 = 2211
2211 × 2 + 2 = 4424
4424×1 + 1 = 4425

Workspace
Report
Q.3
Directions: What value should come at the place of question mark (?) in the given number series?
346, 174, 89, 47.5, 27.75, ?
A. 20.289
B. 18.875
C. 19.250
D. 23.20
E. 16.675
Explaination / Solution:

346÷ 2 + 1 = 174
174÷ 2 + 2 = 89
89÷ 2+3= 47.5
47.5÷ 3+4 = 27.75
27.75÷ 2 + 5 = 18.875

Workspace
Report
Q.4
Directions: What value should come at the place of question mark (?) in the given number series?
46, 178, 270, 330, 366, 386, ?
A. 398
B. 396
C. 374
D. 351
E. 301
Explaination / Solution:

46     178     270      330      366     386     398
132      92        60        36       20       12
-40        -32       -24      -16      -8

Workspace
Report
Q.5
Direction: In the following number series, a wrong number is given. Find out that wrong number.
37, 54, 88, 142, 207, 292, 394
A. 142
B. 88
C. 394
D. 207
E. 54
Explaination / Solution:

37 + 17 × 1 = 54
54 + 17 × 2 = 88
88 + 17 × 3 = 139
139+ 17 × 4 = 207
207 + 17 × 5 = 292
292+ 17 × 6 = 394

Workspace
Report
Q.6
Directions: In the following number series, one of the numbers is wrong. Find out the wrong number.
64, 96, 288, 1296, 7776, 58420
A. 64
B. 7776
C. 288
D. 96
E. 58420
Explaination / Solution:

64 × 1.5 = 96
96 × 3 = 288
288 × 4.5 = 1296
1296 × 6 = 7776
7776 × 7.5 = 58320

Workspace
Report
Q.7
Directions: In the following number series, one of the numbers is wrong. Find out the wrong number.
7, 8, 16, 43, 109, 232, 448
A. 43
B. 109
C. 8
D. 448
E. 791
Explaination / Solution:

7 + 13 = 8
8 + 23 = 16
16 + 33 = 43
43 + 43 = 107
107 + 53 = 232
232 + 63 = 448

Workspace
Report
Q.8
Directions: What value should come at the place of question mark (?) in the following number series?
7, ?, 40, 73, 117
A. 18
B. 16
C. 17
D. 25
E. 21
Explaination / Solution:

7+11=18
18+22=40
40+33=73
73+44=117
(Multiple of 11)

Workspace
Report
Q.9
Direction: What value should come at the place of question mark (?) in the given number series?
14, 22, ?, 113, 238, 454
A. 45
B. 49
C. 52
D. 35
E. 56
Explaination / Solution:

14+23=22
22+33=49
49+43=113
113+53=238
238+63=454

Workspace
Report
Q.10
Directions: What value should come at the place of question mark (?) in the following number series?
16, 18, 24, 36, ?
A. 57
B. 48
C. 56
D. 59
E. 51