Which number is written in scientific notation? 6x10^1112x10^-80.2x10^58x7^2

For this case, the first thing you should know is that a number in scientific notation is a number of the form:
 [tex]a * 10 ^ b [/tex]
 Where,
 a: is a number between 1 and 10
 b: is the exponent of the scientific notation.
 We have then that the number that is in scientific notation written correctly is:
 [tex]6x10 ^ {11}[/tex]
 Answer:
 [tex]6x10 ^ {11}[/tex]