Decode below three cipher riddles:

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

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

People put me on the table and cut me but do not eat me. What am I?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

What has a bottom at the top?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59