RRB Technician Grade 3 previous year question
If a + b = 12 and ab = 8, then the numerical value of (a/b + b/a) will be:
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 3) · Quantitative Aptitude
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Correct answer: (C) 16
a/b+b/a = (a²+b²)/ab = ((a+b)²-2ab)/ab = (144-16)/8 = 128/8 = 16.
हिंदी में प्रश्न
यदि a + b = 12 और ab = 8 है, तो (a/b + b/a) का संख्यात्मक मान क्या होगा?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 16
a/b+b/a = ((a+b)²-2ab)/ab = (144-16)/8 = 16 प्राप्त होता है।
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