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Unit 5 · Mathematical Reasoning and Aptitude Paper 1 · 22 October 2022 Morning

The average of 5 consecutive numbers A, B, C, D and E is 12. What is the product of A and D?पाँच क्रमागत संख्याओं A, B, C, D और E का औसत 12 है। A और D का गुणनफल क्या होगा?

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Correct answer: D. 130

Explanation

For 5 consecutive numbers, the middle one (C) equals the average, 12. So the numbers are 10, 11, 12, 13, 14, with A = 10 and D = 13. A × D = 130.5 क्रमागत संख्याओं में मध्य संख्या (C) औसत के बराबर होती है, अर्थात 12। अतः संख्याएँ 10, 11, 12, 13, 14 हैं, A = 10 और D = 13। A × D = 130।

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