Question 84

If $$4 + 2 = 6$$, $$40 + 20 = 60$$,

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Following the pattern, $$400 + 200 = 600$$, so the smiling face stands for 200. Since two sad faces plus 2000 make 6000, each sad face is $$\frac{6000 - 2000}{2} = 2000$$. So the required sum is $$2000 + 200 + 2 = 2202$$.

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