Help!!! I'm so stuck on this. I will medal and fan!!!

Which number is not in scientific notation?

11 ⋅ 1021
5.7 ⋅ 109
3.1 ⋅ 10−12
1.67 ⋅ 10−5

This makes no sense to me they all look like scientific notation

Question

Help!!! I'm so stuck on this. I will medal and fan!!!


Which number is not in scientific notation?

 11 ⋅ 1021
 5.7 ⋅ 109
 3.1 ⋅ 10−12
 1.67 ⋅ 10−5

This makes no sense to me they all look like scientific notation

anonymous · Answer

They are all exponents btw

anonymous · Answer

The first one lol

anonymous · Answer

first
simple

anonymous · Answer

does it have to be a decimal or something

anonymous · Answer

Because for it to be in scientific notation the number has to be from 1 to 9. 11 is not in this range

anonymous · Answer

Lol, Its pretty obvious all you must do is look over and remeber what a scientific notation msut look like.

michele_laino · Answer

I also think the first one, since it is not in the form 1.x, where x is an integer number

anonymous · Answer

1 to 9 for a scientific notation first question has 11

anonymous · Answer

oh right lol

anonymous · Answer

who I suppose  to give the medal to