What has to be broken before you can use it?

What does the below rebus puzzle mean?

What jumps when it walks and sits when it stands?

what does the below rebus mean?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

I am sure no one can have two things for dinner. what are they?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?