There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

What is next number in the pattern below:

131 517 192 123 ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Decode the movie name from the below picture?

How can a man go eight days without sleep?

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

A man dies of old age on his 25 birthday. How is this possible?