Take away the whole and some still remain. What is it?

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

Why 1729 is a magic number? Answer Logically.

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

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

You can see three almost identical images below. Can you spot the odd one out from them?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

What two things can you never eat for breakfast?