Can you find out the missing number in the grid?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

Which letter of the alphabet has the most water?

Forwards I am heavy, backward I am not. What am I?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

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?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?