What month of the year has 28 days?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

What goes up but never comes down?

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

what's the probability of getting a king or a queen from a pack of 52 cards?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??