book Maths Puzzle Numerical Ability

Solve. The land area of China is 3.692 x 106 square miles, and that of India is 1.18 x 106 square miles. What is the total land area of China and India expressed in standard notation?

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book Other Question
e^lnx+lny=x+y. I believe this to be true but I am not sure. Am I right? please help!!

[3x + 4] < 13
I am using [] to denote absolute value bars