Question:নিচের কোনটি ঋণাত্নক সংখ্যা? 

A 2 
B `(-1)^2` 
C `(-1)^3` 
D `sqrt(2)` 

+ Answer
C 

+ Explanation
`(-1)^3 `= (-1) (-1) (-1) = -1 যা শূণ্য অপেক্ষা ছোট।

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Irin Moni

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