What occurs twice in a week, once in a year but never in a day?

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

Why do Chinese men eat more rice than Japanese men do ?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

Complete the table series riddle by finding the number that can replace "??".

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

I can write cow in 13 letters.

Can You?

In the image below, can you find the value of an angle(y)