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Australian AMC 2013 - Junior Question 4

AMC AUSTRALIA · Australian AMC 2013 - Junior

Question 4

Which of the following is equal to 20?
  1. $3+2\times4$
  2. $(9+5)\times2-4\times2$
  3. $10^2$
  4. $20+20\div2$
  5. $10\div2$