Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Solve the equation in the image by looking at the pattern closely.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Decode below rebus
D
N
A
T
S , D

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G