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Laws of Indices and Number Systems

# Laws of Indices and Number Systems - Laws of Indices and...

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1 Laws of Indices and Number Systems Form 2 Section A Multiple Choice Questions 1. Simplify ( x 3 y 1 ) 4 ( x 2 y 5 ) x y 1 x y 1 x y 2. 6( x 3 y 2 ) 1 (2 x 1 y 2 ) 1 3 x 4 4 12 y x 4 4 3 y x 1 12 x 3. Simplify 1 2 5 3 2 ( ) 2 p q p q 8 8 2 p q 2 12 2 p q 2 8 2 p q 8 12 2 p q 4. 2 1 2 2 3 m n = 6 4 m n 4 6 m n 9 4 m n 4 9 m n 5. 2 4 2 2 3 3 a b a a a b       = b a b a b a b a 6. Which of the following numbers is represented in scientific notation? 7. Express 0.0950 10 12 in scientific notation.

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2 8. It is given that 1 micro-meter ( m) = 10 6 m. Express 0.27 km as micro-meter in scientific notation. 9. In astronomy, one light-year is the distance travelled by light in on3 year. If the speed of light is 3 10 8 m/s, express one light-year in scientific notation.

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