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1. 1-(a-(a-(a-(a-1)))) = ?
- A. 4a-1
- B. 4a-1
- C. 4a-1
- D. 4a-1
Answer: Option D
Explanation:
1 - (a - (a - (a - (a - 1)))) = 1 - (a - (a - (a - a + 1))) = 1 - (a - (a - 1)) = 1 - (a - a + 1) = 1 - 1 = 0
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