The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

A sundial has the fewest moving parts of any timepiece. Which has the most?

What do you see in the image below

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?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What does the below rebus riddle means?

Can you divide the below-given shape into four equal and identical pieces?

Which country gets ill every time?

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

What is the word or phrase?