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