Question:কাবুলিওয়ালা মিনিকে ঝোলা থেকে কী বের করে দিয়েছিল? 

A বাদাম 
B কিশমিশ খোবানি 
C সন্দেশ 
D আঙুর 

+ Answer
B 

+ Explanation
`a/c = a/b xx b/c = 4/5 xx 15/16 = 3/4`

`:. (c^2 - a^2)/(c^2 + a^2)`

`= (1 - a^2/c^2)/(1 + a^2/c^2)`

`= (1 - 9/16)/(1 + 9/16)`

`= 7/16 xx 16/25`

`= 7/25`

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Mohammad Towhidul Islam

Editor, VCampus

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