Your friend says that the product of 3.1x10^6 and 2x10^-8 is 6.2x10^2. What is the correct product? What mistake did your friend likely make?
The correct product of 3.1x10^6 and 2x10^-8 is 6.2x10^-2, not 6.2x10^2.
To find the product, we need to multiply the numbers and add the exponents:
(3.1 * 2) * 10^(6-8) = 6.2 * 10^-2
It seems like your friend made a mistake by not subtracting the exponents properly and incorrectly moved the decimal point to create 6.2x10^2.