Number Series Test

Result

Number Series Test - 1

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Weekly Quiz Competition

Question 1
3 / -1

Look at this series: 4, 6, 12, 30, 90, ?, 1260. What number should come?

A
300

B
305

C
315

D
325

Solution

Logic is:
► 4 × 1.5 = 6,
► 6 × 2 = 12,
► 12 × 2.5 = 30,
► 30 × 3 = 90,
► 90 × 3.5 = 315,
► 315 × 4 = 1260.
Question 2
3 / -1

Look at this series: 7, 10, 8, 11, 9, 12,...so on. What number should come next?

A
7

B
10

C
12

D
13

Solution

This is a simple alternating addition and subtraction series.
In the first pattern, 3 is added. In the second, 2 is subtracted.
► 7 + 3 = 10,
► 10 - 2 = 8,
► 8 + 3 = 11,
► 11 - 2 = 9,
► 9 + 3 = 12,
► 12 - 2 = 10.
Question 3
3 / -1

Look at this series: 6, 12, 48, 264,1560...so on. What number should come next?

A
9636

B
9336

C
9339

D
9969

Solution
Question 4
3 / -1

Look at this series: 3, 4, 7, 8, 11, 12,...so on. What number should come next?

A
7

B
10

C
14

D
15

Solution

This alternating addition series begins with 3.
► Then 1 is added to give 4,
► Then 3 is added to give 7,
► Then 1 is added to give 8,
► Then 3 is added to give 11,
► Then 1 is added to give 12,
► Then 3 is added to give 15.
Question 5
3 / -1

Look at this series: 4, 11, 19, 41, ?, 161...so on. What number should come?

A
62

B
79

C
85

D
90

Solution

Pattern:
► 4 × 2 + 3 = 11,
► 11 × 2 – 3 = 19,
► 19 × 2 + 3 = 41,
► 41 × 2 – 3 = 79,
► 79 × 2 + 3 = 161.
Question 6
3 / -1

Look at this series: 53, 53, 40, 40, 27, 27,...so on. What number should come next?

A
12

B
14

C
27

D
53

Solution

A number is repeated. Then it is reduced by 13 and the result is repeated.
► The next number is 27-13=14.
Question 7
3 / -1

Look at this series: 8, 22, 8, 28, 8,...so on. What number should come next?

A
9

B
29

C
32

D
34

Solution

This is a simple addition series with a random number, 8, interpolated as every other number.
In the series, 6 is added to each number except 8, to arrive at the next number.
► 22 + 6 = 28,
► 28 + 6 = 34.
Question 8
3 / -1

Look at this series: 1, 3, 6, 10, 15...so on. What number should come next?

A
21

B
22

C
20

D
23

Solution

It is a triangular number series forming a triangular pattern.
► 1 = 1,
► 1+2 = 3,
► 1+2+3 = 6,
► 1+2+3+4 = 10,
► 1+2+3+4+5 = 15,
► 1+2+3+4+5+6 = 21.
Question 9
3 / -1

Look at this series: 2, 1, (1/2), (1/4),...so on. What number should come next?

A
(1/3)

B
(1/8)

C
(2/8)

D
(1/16)

Solution

This is a simple division series, each number is one-half of the previous number.
In other terms to say, the number is divided by 2 successively to get the next result.
► 4/2 = 2
► 2/2 = 1
► 1/2 = 1/2
► (1/2) / 2 = 1/4
► (1/4) / 2 = 1/8 and so on.
Question 10
3 / -1

3, 9, 24, 57, ?, 267, 552. What number should come?

A
121

B
126

C
114

D
118

Solution

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Re-Attempt Weekly Quiz Competition

Number Series Test - 1

Result

Number Series Test - 1

Score

-

Rank

-

SHARING IS CARING

Question 1

300

305

315

325

Solution

Question 2

7

10

12

13

Solution

Question 3

9636

9336

9339

9969

Solution

Question 4

7

10

14

15

Solution

Question 5

62

79

85

90

Solution

Question 6

12

14

27

53

Solution

Question 7

9

29

32

34

Solution

Question 8

21

22

20

23

Solution

Question 9

(1/3)

(1/8)

(2/8)

(1/16)

Solution

Question 10

121

126

114

118

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

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