- 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

# Tricks And Shortcuts on Calendar

## Tips,Tricks and Shortcuts on Calendar.

**The word calendar comes from ‘calendae’ , the word used for the first day of the month in the Roman calendar, related to the verb calare means “to call out” , referring to the “calling” of the new moon when it was first seen. **

### Best Tips , Tricks and Shortcuts on Calendar in Aptitude.

- The calendar starts on 1st January and ends on 31st December. The year is classified into two types:

- ordinary years (365 days)
- Leap year (366 days).

- In an ordinary year, there are 365 days, which means 52 x 7 + 1, or 52 weeks and one day.
- Here, are easy tricks and tips on Calendar problems Learn tricks on calendar.
- There are 3 types of questions asked in exams

**Type 1: AP questions **

### Question 1.

**Find 10 ^{th} term in the series 2, 5, 8, 11, 14……**

Options:

- 26
- 29
- 32
- 27

#### Solution:

We know that,

t_{n} = a + (n – 1)d

In the given series,

a = 2

d = 3 …. (5 – 2, 8 – 5…..)

Therefore, 10^{th} term = t_{10} = a + (n-1) d

t_{10} = 2 + (10 – 1) 3

t_{10} = 2 + 9 x 3

t_{10} = 29

Correct option: 2

### Question 2.

**The sum of 3 numbers in arithmetic progression is 36 and product of their extreme is 80. Find the numbers.**

Options:

- 20 , 8 , 16
- 4 , 12, 20
- 12 , 20 , 28
- None of these

**Solution:**

We know that,

t_{n} = a + (n – 1)d

Assume the numbers as:

a-d, a, a+d

or a-d+a+a+d=36

or 3a=36

a=12

now (a-d) (a+d)=80

a²-d²=80

144-d²=80

d²=64

d=8

thus the numbers will be: 4, 12 and 20

Correct option: 2

**Type 1: Calendar Tips and Tricks- To find the day of given date**

**Question 1. What was the day on 27th May 2006?**

**Options:**

**A. Monday**

**B. Saturday**

**C. Sunday**

**D. Friday**

**Solution: **27^{th} May, 2006 = (2005 years + Period from 1.1.2006 to 27.5.2006)

To calculate number of odd days till 2000, we need

Number of odd days in 1600 years = 0

Number of odd days in 400 years = 0

Now, for calculating odd days in the next five years,

5 years = (4 ordinary years +1 leap year) = (4+2)

= 6 odd days

Now to calculate number of odd days from 1^{st} January 2006 to 27^{th} May 2006

January (31 days) + February (28 days because 2006 is an ordinary year) + March (31 days) + (April 30 days) + May 27 days = 147 days

Total number of odd days in 147 days = ((147/7) = 21 weeks+ 0 odd days

Total number of odd days in the entire period = 0 (1600 years) + 0 (400 years) + 6 (5 years) + 0 (Period from 1.1.2006 to 27.5.2006) = 6 odd days

As per the table, on 27th May 2006 the day was Saturday.

Days | Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |

Number of odd days | 0 | 1 | 2 | 3 | 4 | 5 | 6 |

**Correct option: B**

**Type 2: To find the day of the week for the given date when some other date or day is specified. **

**Question 1. It was a Saturday on 8th December 2007. What was the day on 8th Dec 2006?**

**Options:**

**A. Tuesday**

**B. Friday**

**C. Sunday**

**D. Saturday**

**Solution**: 2006 was an ordinary year.

Therefore the number of odd days in 2006 was = 1

Now, 8th Dec 2007 will be 1 day beyond the day on 8th December 2006 due to one odd day.

Since 8th December 2007 was Saturday, therefore, 8th December 2006 was Friday.

**Correct option: B**

**Type 3: Shortcuts Tips and Tricks of Calendar To -Identify the year having same calendar. **

**Question 1. Which year will have the same calendar as that of the year 2007?**

**Options:**

**A. 2017**

**B. 2018**

**C. 2019**

**D. 2012**

**Solution**: Count the number of odd days from the year 2007 onwards to get the sum equal to 0 odd day.

Year | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |

Number of Odd days | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 |

Sum = 14 odd days = 0 odd days

Therefore, calendar of the year 2018 will have the same calendar as that of the year 2007.

**Correct option: B**

### Prime Course Trailer

### Related Banners

Get PrepInsta Prime & get Access to all 200+ courses offered by PrepInsta in One Subscription

**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

- Logarithms – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts
- Clocks – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts
- Clocks and Calendars – Questions | Formulas | How to Solve Quickly | Tricks & Shortcuts

**Others**

- Logarithms –

Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts - Clocks –

Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts - Clocks and Calendars –

Questions |

Formulas |

How to Solve Quickly |

Tricks & Shortcuts

**Others**

Login/Signup to comment