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1 . The addition of 10 digits is 462. The average of their first four digits is 52 and the average of last 5 digits is 38. What is the fifth digit?

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Answer: Option A

Explanation:

Sum of 10 integer is 462. The average of first 4 number is 52 and the average of last 5 number is 38. What is the fifth number ?

Sum of first 4 number = 4 X 52 = 208
Sum of last 5 number = 5 X 38 = 190
So, sum of 9 number = (208 + 190) = 398

So, the 5th number = (462 - 398) = 64 (Ans:)