Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

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?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

Can you spot the hidden girl in the picture below?

I look at you, you look at me I raise my right, you raise your left. What am I?

How can you take 2 from 5 and leave 4?

What is the word or phrase below?
R | E | A | D

No matter how little or how much you use me, you change me every month. What am I?

What is wrong in the below Picture?

What has one letter and starts with an E?