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What day of the week was 1st January 2016?

easy Q11 of 15
Reasoning Ability - Calendar Problems
What day of the week was 1st January 2016?
AThursday
BFriday
CSaturday
DSunday
Step-by-Step Solution

  1. Step 1: Choose a reference date

    Take 1 Jan 2000 = Saturday.

  2. Step 2: Count years from 2000 to 2015

    Total = 16 years. Leap years = 2000, 2004, 2008, 2012 = 4. Ordinary = 12. Odd days = (12×1) + (4×2) = 20 → 20 mod 7 = 6.

  3. Step 3: Add 6 days to Saturday

    Saturday + 6 days → Friday.

  4. Final Answer:

    Friday → Option B

  5. Quick Check:

    1 Jan 2016 is known to be Friday ✅
Quick Trick: For every ordinary year add 1 day; for leap year add 2, then reduce modulo 7.
Common Mistakes:
MISTAKES
  • Forgetting that 2000 is a leap year (divisible by 400).
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