Which number is NOT written in scientific notation?

one times ten to the seven power

eight point two times ten to the one power

two point one three times ten to the five power

negative three point two two five eight eight nine times ten to the negative four power

Question

Which number is NOT written in scientific notation?
		
one times ten to the seven power
		
eight point two times ten to the one power
		
two point one three times ten to the five power
		
negative three point two two five eight eight nine times ten to the negative four power

anonymous · Answer

Again, looks like the last one.