MCQ
For any collection of $n$ items,$\Big(\sum\text{x}\Big)-\overline{\text{x}}=$
- A$\text{n}\overline{\text{x}}$
- B$(\text{n+1)}\overline{\text{x}}$
- ✓$(\text{n}-1)\overline{\text{x}}$
- D$0$
✓
Answer
Correct option: C.
$(\text{n}-1)\overline{\text{x}}$
For any collection of $'n\ ’$ items, $\Big(\sum\text{x}\Big)-\overline{\text{x}}=\text{n}{\big(\overline{\text{x}}}\big)-\overline{\text{x}}=\big(\text{n}-1\big)$
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
Choose the correct answer from the given four options : Graphically, the pair of equations $6x \ – 3y + 10 = 0, 2x \ – y + 9 = 0$ represents two lines which are :
→In the figure, if tangents $PA$ and $PB$ are drawn to a circle such that $\angle\text{APB}=30^\circ$ and chord $AC$ is drawn parallel to the tangent $PB,$ then $\angle\text{ABC} =$
→The value of a so that the point $(3, a)$ lies on the represented by $2x - 3y = 5$ is :
→The perimeter of a triangle is $30\ cm$ and the circumference of its incircle is $88\ cm$. The area of the triangle is :
→Which of the following is an irrational number?
If $\triangle\text{ABC}$ is right angled at $C,$ then the value of $\cos(\text{A}+\text{B})$ is :
→Which of the following cannot be the probability of occurrence of an event?
Let $p$ be a prime number. The quadratic equation having its factors as zeros is
→In Fig. if $A D=14 cm$, then the value of $\tan \theta$ is
→$\sec^210^\circ-\cot^280^\circ=?$
→