JEE Main · MathematicsEasy

$Find the mean of the first 10 natural numbers.$

A. $5.0$
B. $5.5$
C. $6.0$
D. $6.5$

Show correct answer & step-by-step solution

Correct answer: B — $5.5$

Solution

The sum of the first n natural numbers is given by \frac{n ( n + 1 )}{2} . For n = 10, the sum is 55, and the mean is \frac{55}{10} = 5.5 .

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Find the mean of the first 10 natural numbers. — JEE Main Mathematics Question with Solution | SolveGini