What is more useful when it is broken?

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

How can one talk without saying a single word?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

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

Can you find a rabbit in the given picture?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

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 the odd number in the following?

2716, 4135, 5321 and 7145