What is 10% of 20% of 30% ? 

A  0.006% 

B  0.6% 

C  6% 

D  60% 

Solution

Correct Answer: Option B

Solution: 

10% এর 20% এর 30% = \(\frac{{10}}{{100}} \times \frac{{20}}{{100}} \times \frac{{30}}{{100}} = \frac{6}{{1000}}\) = 0.006 = 0.6% 

 Shortcut: যেহেতু উত্তরে % আছে, তাই একটি % রেখে এভাবেও করতে পারেনঃ \(\frac{{10}}{{100}} \times \frac{{20}}{{100}} \times 30\%  = \frac{{60}}{{10}}\% \) = 0.6% 

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