Count the number of lines in the image below ?

what does the below rebus mean?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

why number 8549176320 is one of a kind?

What has 88 keys?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

What is the next number in this series?

4,12,84,3612....

How can you take 2 from 5 and leave 4?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?