Answer :
The product of 8.2 x 10^9 and 4.5 x 10^{-5} in proper scientific notation is 3.69 x 10^5. Hence the correct option is 1.
To multiply these numbers, we multiply their coefficients (8.2 and 4.5) and then add the exponents of 10 (9 and -5).
Multiplying the coefficients gives us 8.2 x 4.5 = 36.9
Adding the exponents of 10 gives us 9 + (-5) = 4.
Therefore, the product in scientific notation is 36.9 x 10^4, but we need the coefficient to be less than 10 for proper scientific notation.
To adjust this, we can divide the coefficient by 10 and add 1 to the exponent: 36.9 x 10^4 = 3.69 x 10^5
