Verbal and Reasoning :: Quantitative Comparison
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If a = 3 then what is the value of (a2)3 - a?
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12 | [B]. |
15
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240 | [D]. |
243 |
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726 |
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Answer: Option E
Explanation:
(a2)3 = a6 ? 36 - 3 = 729 - 3 = 726
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asiyah majeed said:
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| how it becomes 726. if we put the values of a then ans will be 15 |
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Jay said:
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| how's it E? It should be B..
how you made 729 from 36??
Please explain.. or are you giving wrong solutions..?? |
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erum said:
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| B is correct answer because a=3 put values then get answer |
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ALI RAZA said:
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| b i correct no solution gives 726 kindly correct it |
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fahad said:
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| This ans is right coz powers will multiply and become 6 and 3^6=729 and subtract the value of a that is 3... So 729-3=726 |
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Majid said:
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| If (a^2)^3-a then the answer is 726
but
if (a*2)*3-a then answer should be 15....
So correct answer is 15...
b/c there is no sign of power....... |
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