What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

You can see three almost identical images below. Can you spot the odd one out from them?

Replace the question mark with the correct number in below Picture:

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

When can we add 2 to 11 and get 1 as the correct answer?