InterviewSolution
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1). 92). 10.53). 6.54). 21 |
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Answer» Given, The average of five numbers is 11: Total sum of five numbers = 11 × 5 = 55 Given, FORTH number is average of third and fifth number and first number is 3/7th of the fourth number: ⇒ Fourth number = (third number + fifth number)/2 ⇒ 14 = (third number + fifth number)/2 ⇒ Third number + Fifth number = 28 ⇒ First number = 3/7 × (fourth number) ⇒ First number = 3/7 × 14 ⇒ First number = 6 Total sum of all five numbers = 55 ⇒ 55 = First number + second number + third number + forth number + fifth number ⇒ 55 = 6 + second number + 28 + 14 ⇒ Second number = 55 - 48 ⇒ Second number = 7 The average of second number and forth number: ⇒ Average = (7 + 14)/2 ⇒ Average = 21/2 = 10.5 ∴ The average of second number and forth number is 10.5. |
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