Answer:
3 x 10^6 or option 3
Explanation:
(6x10^11) = 600000000000
(2x10^5) = 200000
3000000
Count the zeros - the number of zeros there are will be the exponent of 10 3 is the first digit in 3000000
3 x 10^6
6/2=3
11-5=6
Keep the 10 as is
(3 x 10^6) or option 3