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Aptitude - Number Series

MCQ

Q 1.

Find the value of P in the given series: 2, 8, 18, P, 50

Option: A

32

Option: B

36

Option: C

38

Option: D

40

A

Series pattern is (2x12) , (2x22), (2x32), (2x42), (2x52)

Q 2.

Find the value of Z in the series 3, 5, 9, 17, 33, Z

Option: A

50

Option: B

55

Option: C

60

Option: D

65

D

Pattern

3 ---- 5 ---- 9 ---- 17 ---- 33 ---- Z

    +2    +4    +8      +16     +32

Q 3.

Find the odd one out in the given series. 14, 28, 112, 672, 5374.

Option: A

28

Option: B

112

Option: C

672

Option: D

5374

D

Pattern

Given: 14 ---- 28 ---- 112 ---- 672 ---- 5374

                x2        x4        x6          x8

Output: 14 ---- 28 ---- 112 ---- 672 ---- 5376

So, 5374 is the odd one.

Q 4.

Find the value of Q in the given series: 840, Q, 420, 140, 35.

Option: A

840

Option: B

740

Option: C

640

Option: D

540

A

Pattern

Given: 840 ---- Q ---- 420 ---- 140 ---- 35

                    840/1    Q/2      420/3    140/4

Output: 840 ---- 840 ---- 420 ---- 140 ---- 35

So, value of Q = 840

Q 5.

Find the value of S in the series 4, 19, 49, S, 229

Option: A

99

Option: B

109

Option: C

119

Option: D

209

B

Pattern

Given: 4 ---- 19 ---- 49 ---- S ---- 229

              +15     +30     +60    +120

Result: 4 ---- 19 ---- 49 ----- 109 ----- 229

So, value of S is 109

Q 6.

Find the odd one out in the given series 2, 11, 38, 197, 1172.

Option: A

11

Option: B

38

Option: C

197

Option: D

1172

D

Pattern

First term = 2

Second term = 2x3+5 = 11

Third term = 11x4-6 = 38

Fourth term = 38x5+7 =197

Fifth term = 197x6-8 =1174

So, 1172 is the odd one.

Q 7.

Find the odd one out in the series 4, 2, 3.5, 7.5, 26,25.

Option: A

2

Option: B

3.5

Option: C

7.5

Option: D

26.25

B

Pattern

First term = 4

Second term = 4x0.5 = 2

Third term = 2x1.5 = 3

Fourth term = 3x2.5 = 7.5

Fifth term = 7.5x3.5 = 26.25

So, 3.5 is the odd one.

Q 8.

Find the odd one out in the series 19, 29, 40, 44, 51, 59.

Option: A

40

Option: B

44

Option: C

51

Option: D

59

C

Pattern

Given: 19 -------- 29 --------- 40 --------- 44 ----------- 51 ---------- 59

             +(1+9)     +(2+9)      +(4+0)       +(4+4)        +(5+2)

Result: 19 ------- 29 --------- 40 ---------- 44 ---------- 52 ----------- 59

So, 51 is the odd one.

Q 9.

Find the value of R in the series 21, 25, 34, 50, R, 111.

Option: A

65

Option: B

75

Option: C

85

Option: D

95

B

Pattern

21+22 = 25

25+32 = 34

34+42 = 50

50+52 = 75

75+62 = 111

So, value of R is 75.

Q 10.

Find the value of Y in the given series.

6, 9, 18, 45, 135

20, W, X, Y, 450

Both the series follow the same pattern.

Option: A

130

Option: B

140

Option: C

150

Option: D

160

C

Pattern

1st series: 6 -------- 9 -------- 18 ----------- 45 ----------- 135

                     x1.5        x2             x2.5             x3

2nd series: 20 ------ W -------- X ----------- Y ------------- Z

                             30           60              150               450

W = 20 x 1.5

X = W x 2

Y = X x 2.5

Q 11.

6, x, 21, 33, 48

Option: A

12

Option: B

14

Option: C

16

Option: D

18

A
Q 12.

4, 12, 36, x, 324, 972

Option: A

108

Option: B

125

Option: C

215

Option: D

312

A
Q 13.

2, 8, 18, x, 50, 72

Option: A

32

Option: B

33

Option: C

36

Option: D

38

A
Q 14.

10000, 2000, 400, 80, 16, 3.2, x

Option: A

0.38

Option: B

0.45

Option: C

0.64

Option: D

0.54

C
Q 15.

2, 9, 28, 65, 126, x

Option: A

195

Option: B

199

Option: C

208

Option: D

217

D
Q 16.

3, 6, 12, 24, 48, 96, x

Option: A

182

Option: B

186

Option: C

192

Option: D

198

C
Q 17.

12, 15, 21, 30, 42, 57, x

Option: A

59

Option: B

63

Option: C

65

Option: D

75

D
Q 18.

3, 5, 9, 17, 33, 65, x

Option: A

126

Option: B

128

Option: C

129

Option: D

132

C
Q 19.

Find the odd one out

14, 28, 112, 672, 5374, 53760

Option: A

28

Option: B

112

Option: C

672

Option: D

5374

D
Q 20.

4, 25, 130, x, 3280

Option: A

645

Option: B

655

Option: C

665

Option: D

675

B
Q 21.

4, 18, x, 100, 180, 294

Option: A

32

Option: B

36

Option: C

40

Option: D

48

D
Q 22.

840, x, 420, 140, 35, 7

Option: A

408

Option: B

480

Option: C

804

Option: D

840

D
Q 23.

5, x, 15, 75, 525, 4725, 51975

Option: A

5

Option: B

6

Option: C

8

Option: D

10

A
Q 24.

4, 19, 49, x, 229

Option: A

65

Option: B

75

Option: C

109

Option: D

169

C
Q 25.

7, 26, 63, 124, 215, 342, x

Option: A

391

Option: B

421

Option: C

481

Option: D

511

D
Q 26.

2, 6, 14, 30, x, 126

Option: A

62

Option: B

63

Option: C

73

Option: D

95

A
Q 27.

1220, 244, x, 9.76, 1.952

Option: A

49.2

Option: B

48.8

Option: C

47

Option: D

2

B
Q 28.

2, 10, 42, 170, x, 2730, 10922

Option: A

568

Option: B

588

Option: C

596

Option: D

682

D
Q 29.

23, 42.2, 80.6, 157.4, 311, x

Option: A

616.6

Option: B

618.2

Option: C

623.6

Option: D

624.2

B
Q 30.

14, 33, 104, x, 2110

Option: A

372

Option: B

421

Option: C

433

Option: D

840

B
Q 31.

Find the odd one out

7, 9, 16, 25, 41, 68, 107, 173

Option: A

16

Option: B

41

Option: C

68

Option: D

173

C
Q 32.

Find the odd one out

4, 2, 3.5, 7.5, 26.25, 118.125

Option: A

3.5

Option: B

7.5

Option: C

26.25

Option: D

118.125

A
Q 33.

Find the odd one out

2, 9, 28, 65, 126, 216, 344

Option: A

9

Option: B

28

Option: C

65

Option: D

216

D
Q 34.

3, 3, 12, 108, x, 42300

Option: A

432

Option: B

972

Option: C

1728

Option: D

2700

C
Q 35.

Find the odd one out

14, 19, 29, 40, 44, 51, 59, 73

Option: A

29

Option: B

44

Option: C

51

Option: D

59

C