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1998 AMC 8 Question 7

AMC8 · 1998 AMC 8

Question 7

$100\times 19.98\times 1.998\times 1000=$
  1. $(1.998)^2 $
  2. $(19.98)^2 $
  3. $(199.8)^2 $
  4. $(1998)^2 $
  5. $(19980)^2 $