MCQ
The mean of first n natural numbers is:
- A$\frac{\text{n}(\text{n}-1)}{2}$
- B$\frac{\text{n}-1}{2}$
- C$\frac{\text{n}(\text{n}+1)}{2}$
- ✓$\frac{\text{n}+1}{2}$
✓
Answer
Correct option: D.
$\frac{\text{n}+1}{2}$
The mean is equal to the sum of all the values in the data set divided by the number of values in the
data set. Sum of first n natural numbers is $\frac{\text{n}(\text{n}+1)}{2}$
So, mean of first n natural numbers is $\frac{\frac{\text{n}(\text{n}+1)}{2}}{\text{n}}=\frac{(\text{n}+1)}{2}$
data set. Sum of first n natural numbers is $\frac{\text{n}(\text{n}+1)}{2}$
So, mean of first n natural numbers is $\frac{\frac{\text{n}(\text{n}+1)}{2}}{\text{n}}=\frac{(\text{n}+1)}{2}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The ratio of the radii of two spheres whose volumes are in the ratio $64 : 27$ is:
→On a particular day, the rain fall recorded in a terrace $6\ cm$ long and $5\ m$ board is $15\ cm$. The quantity of water collected in the terrace is:
→A solid metal sphere is cut through the centre in two equal parts. If the radius of the sphere is 7 cm, then the total surface area of each part is
The simplest from of $0.\overline{36}$ is:
→If r is the radius and h is height of the cylinder the volume will be:
In Fig , $B C \| P Q, B P$ and $C Q$ intersect at $O$. If $x+y=80^{\circ}$ and $x-y=55^{\circ}$, then $z=$
→If $\triangle\text{PQR}≡\triangle\text{EFD},$ then $\angle\text{E}=$
→The diameter of a sphere is $6\ cm.$ It is melted and drawn into a wire of diameter $2\ mm.$ The length of the wire is.
→If $2 x+\frac{y}{3}=12$ and $x y=30$, then $8 x^3+\frac{y^3}{27}=$
→A point whose abscissa and ordinate both are negative will lie in