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If x+y > 5 and x - y > 3, then which of the following gives all & only possible values of x ? 

A    x < 3 

B   x > 3 

C   x > 4 

D   x < 5 

Solution

Correct Answer: Option C

  দুটি সমীকরনের যোগ করলে আসবে 2x > 8    x > 4 

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