Question

If it was a Friday on 1 January 2016, what was the day of the week on 31 December 2016?

• A. Saturday
• B. Friday
• C. Monday
• D. Sunday

Hint:

To determine the weekday of a date in the same year, count the number of extra days beyond complete weeks and move forward accordingly.

Answer 1

The Correct Option is A

Step 1: Determine the number of days in 2016 Since 2016 was a leap year, it had: \[ 366 \text{ days} \] which consists of: \[ 52 \text{ weeks} + 2 \text{ extra days}. \]
Step 2: Determine the day of the week for 31 December 2016 Since 1 January 2016 was a Friday, and 2016 has 2 extra days beyond complete weeks, we move forward by 2 days: \[ \text{Friday} + 1 = \text{Saturday} \] \[ \text{Saturday} + 1 = \text{Sunday} \] So, 30 December 2016 was a Friday, and 31 December 2016 was a Saturday. Final Answer: (A) Saturday