Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

In the image given, you can find several triangles. Can you count them all?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What 5-letter word typed in all capital letters can be read the same upside down?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Why Aeroplane windows are round?