Question : Solve the following expression. $50-[20+(30-(25-5))]$
Option 1: 10
Option 2: 30
Option 3: 20
Option 4: 40
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Correct Answer: 20
Solution : 50 – [20 + (30 – (25 – 5)] = 50 – [20 + (30 – 20)] = 50 – [20 + 10] = 50 – 30 = 20 Hence, the correct answer is 20.
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