When can we add 2 to 11 and get 1 as the correct answer?

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?

The more you take me, the more you leave me behind.
Who Am I?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Spot the cat in the picture below

Which English verb becomes past tense just by rearranging the letters?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

what does this below rebus represent identXQQQQQME