What is wrong in the below Picture?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

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

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?