What is next number in the pattern below:

131 517 192 123 ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I look at you, you look at me I raise my right, you raise your left. What am I?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

By adding four matchsticks, can you divide the square shown in the picture into two equal parts?

Why is Saturday stronger than Monday?

Count the number of lines in the image below ?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

If it took eight men ten hours to build a wall, how long would it take four men to build 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?