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

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Which point will the car reach to go out?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Solve the equation in the image by looking at the pattern closely.

Can you fill the blank with the correct number?

6 30 870 756030 _____