There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

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

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?