I’m tall when I’m young, and I’m short when I’m old. What am I?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I am sure no one can have two things for dinner. what are they?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

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?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

Replace the question mark with the correct number in the below-given picture?

John is the son of Jacob.
So,
Jacob is the_____of John's father?