John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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

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

What four weights can be used to balance from 1 to 30 pounds?

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?