Which number is not in scientific notation? six times ten to the twenty-fifth two point zero one times ten to the negative second one point three times ten to the negative fourth zero point five times ten to the third

Question

Which number is not in scientific notation?   six times ten to the twenty-fifth   two point zero one times ten to the negative second   one point three times ten to the negative fourth   zero point five times ten to the third

anonymous · Answer

Start with do you know what scientific notation is?

lukebluefive · Answer

PsychoTink is right.  You need to know what scientific notation is before you can answer this question.  A value written in scientific notation always has a single, positive digit to the left of the decimal point.  One of the values you gave doesn't match that description.