What is the order of 4*10^-7, 7*10^-9, 1*10^4, 2*10^4 from least to greatest?

a. 1*10^4, 2*10^4, 4*10^-7, 7*10^-9
b. 4*10^-7, 7*10^-9, 1*10^4, 2*10^4
c. 7*10^-9, 4*10^-7, 1*10^4, 2*10^4***
d. 7*10^-9, 4*10^-7, 2*10^4, 1*10^4

1 answer

Option C is correct. NOTE: 0.000000007, 0.0000004, 10000, 20000