- Prepare
All Platforms Programming Aptitude Syllabus Interview Preparation Interview Exp. Off Campus - Prime Video
- Prime Mock

- Interview Experience
- Prime VideoNew
- Prime Mock
- Interview Prep
- Nano Degree
- Prime Video
- Prime Mock

# How To Solve Coding And Number Series Quickly

## Concept of Coding And Number Series:-

In this Page How to Solve Coding and Number Series Questions Quickly is given.

Letter-Number Coding is a mark scoring section of the reasoning questions. In competitive examinations reasoning contain a most important part. If you achieve good marks in reasoning you will get a good score and rank in competitive examinations.

The best way to understand Number series coding is by going through its solved questions. Reasoning is all about more and more practice. Here are a few solved Questions to help you in a better way.

### Types of Number Series:

**1)Perfect Square Series:**

**Example**– 324 = 18^{2} , 361 = 19^{2}, 400 = 20^{2}, 441 = 21^{2}, 484 = 22^{2}

**2)Perfect Cube Series:**

**Example**– 8^{3}=512, 9^{3}=729, 10^{3}=1000, 11^{3}=1331

**3)Geometric Series:**

**Example- **4\times 5=20,20 \times 5=100,100\times 5=500,500 \times 5=2500

**4)Arithmetic Series:**

**Example- **4,8,12,16,20,24,28

The common difference is constant that is 4.

**5)Two Stage type Series:**

**Example-**1, 3, 6, 10, 15…

3 – 1 = 2, 6 – 3 = 3, 10 – 6 = 4, 15 – 10 = 5….

Now, we get an arithmetic sequence 2, 3, 4, 5

**6)Mixed Series:**

**Example-**10, 22, 46, 94, 190,?

10\times2 = 20 +2 = 22,22 \times 2 = 44 + 2 = 46,46 \times 2 = 92 + 2 = 94,94 \times 2 = 188 + 2 = 190,190 \times 2 = 380 + 2 = 382.

So the missing number is 382.

**7)Arithmetic-Geometric Series:**

**Example- **1, 4, 8, 11, 22, 25, ?

Series Type +3 , \times2 ({\text{i.e Arithmetic and Geometric Mixing}})(e.g: 1+3=4;4\times 2=8)

**8)Twin/Alternate series:**

**Example-** 3, 4, 8, 10, 13, 16 ? ?

Sol: As we can see, there are two series formed

Series 1 : 3, 8, 13 with a common difference of 5

Series 2 : 4, 10, 16 with a common difference of 6

So, the next two terms of the series should be 18 & 22 respectively.

**How to Solve Coding and Number Series Questions Quickly :**

**Question 1:**

If in a certain language A is coded as 1, B is coded as 2, and so on, how is B I D D I C coded in that code?

**Option:**

A) 294493

B) 284563

C) 375582

D) 394492

**Answer:** A

**Explanation:**

As given the letters are coded as:

A B C D E F G H I

1 2 3 4 5 6 7 8 9

So, in B I D D I C, B is coded as 2, I as 9, D as 4, and C as 3. Thus, B I D D I C is coded as 294493.

**Question 2:**

If D is coded as 4 and C O V E R is coded as 63, then BASIS will be coded as?

**Option:**

A) 54

B) 55

C) 49

D) 50

**Answer:** D

**Explanation:**

It is clear that the code is arrange in this mannerA = 1. B = 2, C = 3 … so on

so that C O V E R is coded as [C+O+V+E+R]

⇒ 3 + 15 + 22 + 5 + 18 = 63.

Now B A S I S is coded as [ B+A+S+I+S]

⇒2 + 1 + 19 + 9 + 19 = 50.

**Question 3:**

bcd’ is coded as ‘def’ then ‘True’ is coded as……….

**Options:**

A) Hynx

B) Vrwx

C) Zbyw

D) Vtwg

**Answer:** D

**Explanation:**

b – d (+2)

c – e (+2)

d – f (+2)

+2 letters are considered in this code.

True – Vtwg

**Question 4:**

In a certain code ‘MONARCHY’ is written as ‘NPOBSDIZ’. How will ‘STANDARD’ be written as in that code?

**Options:**

A) TUBOEBSE

B) TVBSHBNW

C) WEHJSOLX

D) GHWQMKLJ

**Answer:** A

**Explanation:**

Each letter of MONARCHY is replaced by the next letter as per the alphabet

M+ 1 = N

O+ 1 = P

N+ 1 = O

A+ 1 = B

R+ 1 = S

C + 1= D

H+ 1 = I

Y+ 1 = Z

Similarly, STANDARD is written as TUBOEBSE

**Get over 200+ course One Subscription**

Courses like AI/ML, Cloud Computing, Ethical Hacking, C, C++, Java, Python, DSA (All Languages), Competitive Coding (All Languages), TCS, Infosys, Wipro, Amazon, DBMS, SQL and others

- Number Series – Questions Formulas | How to Solve Quickly | Tricks & Shortcuts
- Letter and Symbol Series – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts
- Logical Sequence of Words – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts
- Analogy and Classification Pattern – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts

- Number Series – Questions |
- Formulas |

How to Solve Quickly |

Tricks & Shortcuts - Letter and Symbol Series – Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts - Logical Sequence of Words – Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts - Analogy and Classification Pattern – Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts

Login/Signup to comment