Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

What number should come in place of the question mark below?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Move three sticks of the spiral below to form a square.

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?