13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

I travel all around the world but always stay in the corner. What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

I’m tall when I’m young, and I’m short when I’m old. What am I?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?