{(০.৯)৩ + (০.৪)}/{০.৯ + ০.৪} এর মান কত?

A ০.৩৬

B ০.৫১

C ০.৮১

D ০.৬১

Solution

Correct Answer: Option D

{(0.9)³ + (0.4)³} / (0.9 + 0.4)
= (0.729 + 0.064) / (0.9 + 0.4)
= 0.793 / (0.9 + 0.4)
= 0.793 / 1.3
= 0.61

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