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1. If A + B = 2C and C + D = 2A , then
- A. A + C = B + D
- B. A + C = B + D
- C. A + C = B + D
- D. A + C = B + D
Answer: Option A
Explanation:
A + B = 2C
C + D = 2A
- - - - - - - - - - - - - - - - - - - - - - - - -
A + B + C + D = 2C + 2A
বা, 2C + 2A - C - A = B + D
বা, A + C = B + D.
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