Question : What is $x$, if $x^{3}=1.5^{3}-0.9^{3}-2.43?$
Option 1: –0.5
Option 2: 0.6
Option 3: –0.7
Option 4: –1.6
Correct Answer: 0.6
Solution : $x^3=1.5^3 - 0.9^3-2.43$ $⇒x^3=3.375-0.729-2.43$ $⇒x^3=0.216$ $⇒x^3=0.6^3$ $⇒x=0.6$ Hence, the correct answer is 0.6.
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