What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

They are three errirs in this question. Can you find them?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A man dies of old age on his 25 birthday. How is this possible?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

In the picture given below, can you find out which digit will take place of the question mark?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?