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Question

The average marks of a student in ten papers is 80. If the highest and the lowest scores are not considered, the average is 81. If his highest score is 89, find the lowest.

दस प्रश्नपत्रों में एक छात्र के औसत अंक 80 हैं। यदि अधिकतम और न्यूनतम अंकों को सम्मिलित नहीं किया जाता है, तो औसत 81 होता है। यदि उसका अधिकतम अंक 89 है, तो उसका न्यूनतम अंक ज्ञात करें।

A
63
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B
76
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C
78
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D
75
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Solution

The correct option is A 63
Required Marks = 80 × 10 – (81 × 8 + 89) = 63

अपेक्षित अंक = 80 x 10 - (81 x 8 + 89) = 63

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