Question
Download Solution PDFThe average of 7 natural numbers is 70. Among them six numbers are 32, 69, 72, 65, 79, 48. What is the seventh number?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven Data:
Average of seven numbers = 70
Six numbers = 32, 69, 72, 65, 79, 48
Concept:
The total of seven numbers can be calculated by multiplying the average with 7. Subtracting the sum of given six numbers from this total gives the seventh number.
Calculation:
Total of seven numbers = Average × 7 = 70 × 7 = 490.
⇒ Sum of given six numbers = 32 + 69 + 72 + 65 + 79 + 48 = 365.
⇒ Seventh number = Total - Sum of six numbers = 490 - 365 = 125.
Therefore, the seventh number is 125.
Last updated on Jun 30, 2025
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