Which is the smallest number that you can write using all the vowels exactly once?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Where do fish keep their money?

What building has the most stories?

What goes up but never comes down?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What kind of tree can you carry in your hand?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?