What does this below rebus puzzle mean?

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

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

What has 13 hearts but no other organs?

Who is that with a neck and no head, two arms and no hands? What is it?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Be active and find the killer in the picture Riddle below.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?