# Number Series

Number Series - Important Points

1. | In the series: 4, 7, 12, 19, 28, ... What number should come next? |
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A. 49

B. 36

C. 30

D. 39

View Answer Discuss Work SpaceAnswer: option d

Explanation:

First term : 4

Second term: 4 + 3 = 7

Third term : 7 + 5 = 12

Fourth term : 12 + 7 = 19.

Fifth term : 19 + 9 = 28.

Therefore,

Next Terms : 28 + 11 = 39

2. | In the series: 8, 28, 116, 584,... What number should come next? |
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A. 3502

B. 3504

C. 3506

D. 3508

View Answer Discuss Work SpaceAnswer: option d

Explanation:

(8 *3) + 4 = 28

(28 *4) + 4 = 116

(116 *5) + 4 = 584

(584 *6) + 4 = 3508

3. | In the series: 8, 28, 116, 584,... What number should come next? |
---|

A. 3502

B. 3504

C. 3506

D. 3508

View Answer Discuss Work SpaceAnswer: option d

Explanation:

(8 *3) + 4 = 28

(28 *4) + 4 = 116

(116 *5) + 4 = 584

(584 *6) + 4 = 3508

4. | In the series: 3, 7, 23, 95,... What number should come next? |
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A. 68

B. 256

C. 479

D. 497

View Answer Discuss Work SpaceAnswer: option c

Explanation:

1st number = 3

2nd number = 3 x 2 + 1 = 7

3rd number = 7 x 3 + 2 = 23

4th number = 23 x 4 + 3 = 95

5th number = 95 x 5 + 4 = 479

5. | In the series: 1, 1, 4, 9, 27, 16,... What number should come next? |
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A. 32

B. 64

C. 128

D. 81

View Answer Discuss Work SpaceAnswer: option b

Explanation:

The series consists of squares and cubes of consecutive natural numbers i.e. 12, 13, 22, 23, 32, 33, 42, .....

So, missing term = 4^3 = 64.

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