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The average of 5 consecutive numbers A, B, C, D and E is 48. What is the product of A and E?

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The average of 5 consecutive numbers A, B, C, D and E is 48. What is the product of A and E? 

(a) 2162 (b) 2208 (c) 2024 (d) 2800 (e) None of these

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(e) Let A = x
According to the question
x + x +1 + x + 2 + x + 3 + x +4
= 5 × 48

5x + 10 = 240
⇒ 5x = 230
⇒ x = 46
E = 46 + 4 = 50
 A × E = 46 × 50 = 2300

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