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**Type 3 - Factorisation / Prime Factorisation**

If Type 1 and Type 2 is not applicable in a sequence, one must try to make factors of the numbers in the next step.**Example 1: 6, 15,35,77,143, __.**

In the above example all the previous tricks are not applicable to get answer. Hence, We will make factors of the given numbers

(2,3,5,7,11,13) all are prime numbers in ascending order.

Hence, 13*17 = 221, is the correct answer.

Question 1:Next number in series 31, 41, 47, 59, __?

**Type 4 - Fibonacci Series**

A series in which a number is made by using previous two numbers is called Fibonacci series.

**Example : 1, 4, 5, 9, 14, 23, ___**

In the above sequence all the numbers are sum of previous two numbers.

Therefore, 23+14 = 37, is the correct answer.

**Type 5 â€“ Sum of Digits**

**Example 1:**

In the above sequence, difference between two numbers is the sum of digits of the first number.

Hence, 89 + 17 = 106, is the correct answer.**Example 2:**

All the numbers are multiplied by their sum or added by their sum alternately. Therefore, 11788 + 25 = 11813, is the correct answer.

**Type 6 â€“ Alternate Pattern Series**

When numbers given as a hint in a questions are more or when a question ask two numbers of a series or same number come twice in a series, these all give hint to alternate pattern series.**Example 1:**

So, numbers are 12 + 5 = 17, 53 - 6 = 47**Ans.** 17,47**Example 2:**

So, the number is 24 + 3 = 27**Ans.** 27

Question 2:In the given series, a number is missing. The same number is present in the options below.

32, 40, 24, 16, 24, __

Select the missing number.

**Type 7 - Decimal Pattern Series**

When the numbers of the sequence are given in the decimal form is decimal pattern series.**Example 1:**

So, the answer is 18*.8 = 14.4**Example 2: 16, 24, 60, 210, 945, __**

The pattern is:

16*1.5 = 24

24*2.5 =60

60*3.5 = 210

210*4.5 = 945

945*5.5 = 5197.5

**Type 8 - Bracket Pattern Series**

While using bracket pattern we multiply first outside and either add or sub based on given no.

**Example 1: 3, 28, 180, ____, 3676**

The pattern is : (3+1)*7 = 28

(28 + 2)*6 =180

(180 + 3)*5 = 915

(915 + 4)*4 = 3676**Ans.** 915**Example 2: 37, 31, 52, 144, __, 2810 **

The pattern is:

(37 - 6)*1 = 31

(31 - 5)*2 = 52

(52 - 4)*3 = 144

(144 - 3)*4 = 564

(564 - 2)*5 = 2810

Ans. 564

**Type 9 - Dual Pattern Series**

**Example:****15, 9, 8, 12, 36, 17019, a, b, __, d, e**

The pattern is:

(15 - 6)*1 = 9

(9 - 5)*2 = 8

(8 - 4)*3 = 12

Similarly:

(19 - 6)*1 = 13

(13 - 5)*2 = 16

(16 - 4)*3 = 36

**Type 10 - Factorial Based Series**

This is latest pattern question asked in latest exams**Example 1:****Ans.** 33**Example 2:****Ans. **606 + 721 = 1327

Question 3:In the given series, only one number is wrong.

3, 9, 19, 32

Find out the wrong number.

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