IBPS Clerk Prelims practice question
A quantity M satisfies M^(3/2) = 512. If the square of M is then reduced by 25%, find the resulting value.
From a IBPS Clerk Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) 3072
M^(3/2) = 512 ⟹ M = 512^(2/3) = (512^(1/3))² = 8² = 64. Square of M = 64² = 4096. Reduced by 25%: 4096 × 0.75 = 3072.
हिंदी में प्रश्न
एक राशि M इस प्रकार है कि M^(3/2) = 512 है। यदि M के वर्ग को 25% कम किया जाए, तो परिणामी मान ज्ञात करें।
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सही उत्तर: (B) 3072
M^(3/2) = 512 ⟹ M = 512^(2/3) = (512^(1/3))² = 8² = 64। M का वर्ग = 64² = 4096। 25% कम करने पर: 4096 × 0.75 = 3072।
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