যদি x+y= z হয় তবে, x,y এবং z এর গড় কত?
 

A z/3  

B 2z/3  

C z/2  

D (x+y)/z

Solution

Correct Answer: Option B

এখানে, x+y= z
∴ x,y এবং z এর গড়,
= (x+y+z)/3
= (z+z)/3
= 2z/3

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