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This mock test of Test: Arun Sharma Based Level 1: Number Series for Banking Exams helps you for every Banking Exams entrance exam.
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QUESTION: 1

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

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

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

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

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

Solution:

QUESTION: 4

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

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

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

Solution:

**Pattern:**

**► **4 × 2 + 3 = 11,

**► **11 × 2 – 3 = 19,

**► **19 × 2 + 3 = 41,

**► 41 × 2 – 3 = 79,**

**► **79 × 2 + 3 = 161.

QUESTION: 6

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

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: 7

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

Solution:

A number is repeated. Then it is reduced by 13 and the result is repeated.

► The next number is 27-13=14.

QUESTION: 8

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

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

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

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

Solution:

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