Q. 8

  1. Population of Mexico = 111 210 000 in Standard form (2 s.f)

    1.11 \times 10^8 1.1 \times 10^8

  2. Senegal South Korea

  1. \Delta South \, Korea \, and \, Senegal \, in \, Standard \, form (4.8 \times 10^7) - (1.4 \times 10^7) \Rightarrow 3.4 \times 10^7