AP Police SI previous year question
If r is the reciprocal of the sum of the reciprocals of 4/5 and 5/8, the digit in the fourth decimal place of r is
Asked in AP Police SI Prelims: 2023 (Paper I & II) · Quantitative Aptitude
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Correct answer: (D) 8
Reciprocals: 5/4 and 8/5. Sum = 25/20+32/20 = 57/20. r = 20/57 = 0.35087719... 4th decimal digit = 8.
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हिंदी में प्रश्न
यदि r, 4/5 और 5/8 के व्युत्क्रमों के योग का व्युत्क्रम है, तो r के दशमलव के चौथे स्थान का अंक है
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सही उत्तर: (D) 8
व्युत्क्रम (reciprocals): 5/4 और 8/5। योग = 25/20+32/20 = 57/20। r = 20/57 = 0.35087719... चौथा दशमलव अंक 8 है।
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