## Competitive Exam Notes for Average

An average or an arithmetic mean of given data is the sum of the given observations divided by number of observations. औसत संख्याओं से सम्बंधित महत्वपूर्ण सूत्र 1. Average of first n natural number=(n+1)/2 2. Average of first n even number=(n+1) 3. Average of first n odd number=n 4. Average of consecutive number=(Firtst number+Last number)/2 5. Average of 1 to n odd numbers=(Last odd number+1)/2 6. Average of 1 to n even numbers=(Last even number+2)/2 7. Average of squares of first n natural numbers=[(n+1)(2n+1)]/6…

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