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

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

What occurs twice in a week, once in a year but never in a day?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

People make me, save me, change me, raise me. What am I?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

There is something which you can be arrested for attempting but not for successfully completing.

I have eight fingers and two thumbs but I do not live. What Am I?