Time to put your logical reasoning to the test! Imagine you’re given the following challenge:
If December 3, 1990, was a Sunday, what day of the week was January 3, 1991?
At first glance, this question might seem simple, but it often tricks people into making errors. Are you ready to solve it? Take a moment to think about it, and let’s break it down together!
Common Mistakes When Solving This Puzzle
Many people immediately assume that January 3, 1991, must be the same day of the week as December 3, 1990. But this is where small details can make a big difference. Here are some common mistakes that lead to the wrong answer:
Forgetting That December Has 31 Days
One of the biggest errors is not counting the number of days correctly. December has 31 days, which means that from December 3 to January 3, we need to track the extra days carefully.
Assuming Every Month Starts on the Same Day of the Week
People often forget that months do not start on the same weekday each year. Since December 3, 1990, was a Sunday, that does not mean January 3, 1991, will also fall on a Sunday.
Not Understanding the Weekday Shift
Each new day shifts the weekday forward by one, unless a leap year causes an additional shift. Since 1990 was not a leap year, we follow the standard calendar shift.
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Step-by-Step Solution: Finding the Correct Day
Let’s break it down logically to find the correct answer.
Step 1: Count the Days in December After December 3
Since December 3, 1990, was a Sunday, we need to count how many days remain until the end of the month.
December has 31 days in total. From December 3 to December 31, there are 28 days.
Now, let’s see how the weekday shifts:
December 4 – Monday
December 5 – Tuesday
December 6 – Wednesday
December 7 – Thursday
December 8 – Friday
December 9 – Saturday
December 10 – Sunday
December 11 – Monday
December 12 – Tuesday
December 13 – Wednesday
December 14 – Thursday
December 15 – Friday
December 16 – Saturday
December 17 – Sunday
December 18 – Monday
December 19 – Tuesday
December 20 – Wednesday
December 21 – Thursday
December 22 – Friday
December 23 – Saturday
December 24 – Sunday
December 25 – Monday
December 26 – Tuesday
December 27 – Wednesday
December 28 – Thursday
December 29 – Friday
December 30 – Saturday
December 31 – Sunday
Now, we’ve reached the end of December. December 31, 1990, was a Sunday.
Step 2: Move Forward to January 3, 1991
Now, let’s count forward to January 3:
January 1, 1991 – Monday
January 2, 1991 – Tuesday
January 3, 1991 – Wednesday
So, the correct answer is Wednesday.
Final Answer: January 3, 1991, was a Wednesday (Option D).
Why Is This Puzzle So Tricky?
This puzzle is a great test of logical thinking and attention to detail. Many people fall for traps like forgetting to count each day correctly, assuming months begin on the same weekday every year, and not considering the shift in weekdays due to the number of days in a month.
It’s a simple problem, but it requires careful thought to get it right!
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Try More Puzzles Like This!
Did you get the right answer? Comment below and share your thoughts! If you enjoyed this challenge, try testing your friends and see if they can solve it too.
Want more puzzles like this? Stay tuned for more brain teasers, logic puzzles, and calendar challenges to keep your mind sharp!
