Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

When we see 2 but call 10?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What does this rebus means ?

PROG WORKRESS

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.