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1. a - [2b {3c - (a - 2b + 3c)}] = কত?
- A. 0
- B. 0
- C. 0
- D. 0
Answer: Option A
Explanation:
a - [2b - {3c - (a - 2b + 3c)}]
= a - [2b - {3c - a + 2b - 3c}]
=a - [2b - 3c + a - 2b + 3c]
=a - 2b + 3c - a + 2b - 3c
= 0
= a - [2b - {3c - a + 2b - 3c}]
=a - [2b - 3c + a - 2b + 3c]
=a - 2b + 3c - a + 2b - 3c
= 0
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