How many times smaller is 1.9 × 103 than 4.085 × 105?
a 0.46
b 2.15
c 46
d 215
To find out how many times smaller one number is compared to another number, we divide the larger number by the smaller number.
So, we divide 4.085 × 10^5 by 1.9 × 10^3:
(4.085 × 10^5) / (1.9 × 10^3) = 215
Therefore, 1.9 × 10^3 is 215 times smaller than 4.085 × 10^5.
The answer is d) 215.