what does the below math rebus puzzle mean?

Keyboard words are not in alphabetical order, Why?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Why Wine Glass Stem is so long?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Find the hidden panda in the image below.

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?