A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What number should come in place of the question mark below?

Why is the Hole below a Lock?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Look at the picture and find out which square is not linked with any of the other squares.

What is full of holes but still holds water?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

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

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M