A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Spot 5 differences in two Christmas tree below:

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What does below rebus means ?

Can you write down eight eights so that they add up to one thousand?

81 x 9 = 801. What must you do to make the this equation true?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?