PE 1 - Number Series | Number & Alphabet Series
Directions for next 10 questions.
In the following questions, a number series is given with one term missing. Choose the correct alternative that will continue the pattern.
7, 10, 13, 16, 19, ?
- A.
22
- B.
21
- C.
20
- D.
23
Answer: Option A
Explanation :
7 + 3 = 10
10 + 3 = 13
13 + 3 = 16
16 + 3 = 19
∴ 19 + 3 = 22
Hence, option (a).
Workspace:
14, 15, 19, 28, ?, 69, 105
- A.
37
- B.
42
- C.
44
- D.
45
Answer: Option C
Explanation :
14 + 12 = 15
15 + 22 = 19
19 + 32 = 28
28 + 42 = 44
44 + 52 = 69
69 + 62 = 105
Hence, option (c).
Workspace:
7, 12, 22, 37, 57, ?
- A.
43
- B.
52
- C.
82
- D.
92
Answer: Option D
Explanation :
7 + 5 = 12
12 + 10 = 22
22 + 15 = 37
37 + 20 = 57
57 + 25 = 82
Hence, option (d).
Workspace:
1, ?, 8, 4, 27, 9, 64, 16
- A.
1
- B.
4
- C.
3
- D.
6
Answer: Option A
Explanation :
1 = 13
? = 12
8 = 23
4 = 22
27 = 33
9 = 32
64 = 43
16 = 42
Hence, option (a).
Workspace:
4, 9, 19, 39, 79, ?
- A.
169
- B.
159
- C.
149
- D.
139
Answer: Option B
Explanation :
4 × 2 + 1 = 9
9 × 2 + 1 = 19
19 × 2 + 1 = 39
39 × 2 + 1 = 79
∴ 79 × 2 + 1 = 159
Hence, option (b).
Workspace:
8, 12, 24, 28, 56, 60, 120
- A.
240
- B.
244
- C.
124
- D.
148
Answer: Option C
Explanation :
8 + 4 = 12
12 × 2 = 24
24 + 4 = 28
28 × 2 = 56
56 + 4 = 60
60 × 2 = 120
∴ 120 + 4 = 124
Hence, option (c).
Workspace:
325, 259, 204, 160, 127, 105
- A.
94
- B.
96
- C.
98
- D.
100
Answer: Option A
Explanation :
325 - 66 = 259
259 - 55 = 204
204 - 44 = 160
160 - 33 = 127
127 - 22 = 105
∴ 105 - 11 = 94
Hence, option (a).
Workspace:
88, 73, 77, 62, 66, 51, 55, ?
- A.
44
- B.
33
- C.
40
- D.
30
Answer: Option C
Explanation :
88 - 15 = 73
73 + 4 = 77
77 - 15 = 62
62 + 4 = 66
66 - 15 = 51
51 + 4 = 55
∴ 55 - 15 = 40
Hence, option (c).
Workspace:
1, 5, 14, 30, 55, 91, ?
- A.
130
- B.
140
- C.
150
- D.
160
Answer: Option B
Explanation :
1 + 22 = 5
5 + 32 = 14
14 + 42 = 30
30 + 52 = 55
55 + 62 = 91
91 + 72 = 140
Hence, option (b).
Workspace:
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