IBPS PO Prelims practice question
The average of 5 numbers is 69. If 4 of the numbers are 57, 73, 31, 61, find the remaining number.
From a IBPS PO Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 123
Total sum needed = 69 x 5 = 345. Missing number = 345 - 222 = 123.
हिंदी में प्रश्न
5 संख्याओं का औसत 69 है। यदि इनमें से 4 संख्याएँ 57, 73, 31, 61 हैं, तो शेष संख्या ज्ञात कीजिए।
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उत्तर और व्याख्या देखें
सही उत्तर: (C) १२३
Total sum needed = 69 x 5 = 345. Missing number = 345 - 222 = 123.
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