To find out how many more people live in China than in India, we can subtract India's population from China's population.
China's population: \( 1.45 \times 10^9 \)
India's population: \( 1,400,000,000 \) which is also \( 1.4 \times 10^9 \).
Now, we perform the subtraction:
\[ 1.45 \times 10^9 - 1.4 \times 10^9 = (1.45 - 1.4) \times 10^9 = 0.05 \times 10^9 \]
Now we can express \( 0.05 \times 10^9 \) in scientific notation:
\[ 0.05 \times 10^9 = 5 \times 10^{-2} \times 10^9 = 5 \times 10^{7} \]
So the difference in population is \( 5 \times 10^7 \).
Thus, the correct response is:
5×10^7