Question

mean of 1st 49 natural numbers
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Answer 1

Answer :-

● Sum of first 49 natural numbers can be found out the formula :-

$\frac{n(n + 1)}{2}$

●Mean can be found out by the formula :-

$mean = \frac{sum \: of \: all \: numbers}{total \: numer \: of \: numbers}$

● After substituting the value of n i,e 49, we get :-

$sum = \frac{49 \times 50}{2}$

$\: \: \: \: \: \: \: = 49 \times 25$

$\: \: \: \: \: \: \: \: = 1125$

●Thus, the mean will be :-

(Note that total number of numbers will be 49)

$mean = \frac{1125}{49} = 25$

Hence :-

$\huge\boxed{Mean=25}$