Replace the question mark with the correct number.

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

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What does does this rebus picture means ?

When it's bad luck to meet a black cat?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What can you deduce from the following BrainBat?

CRY
LMKI

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?