Download App

Permutations , combinations and binomial expansion — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPermutations , combinations and binomial expansion1 Mark
MCQ
State the value of ${ }^n C_1={ }^n P_n -$
  • A
    $n !$
  • B
    $(n-1) !$
  • C
    $\frac{1}{n !}$
  • ✓
    $\frac{1}{(n-1) !}$
✓

Answer

Correct option: D.
$\frac{1}{(n-1) !}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Permutations , combinations and binomial expansion→Permutations , combinations and binomial expansion — all question types→Statistics STD 11 Commerce question papers→Gujarat Board STD 11 Commerce question papers→Gujarat Board question paper generator→

Similar questions

In continuous frequency distribution, what is the class length of a class ?
→
Which of the following is the qualitative data ?
→
$f(x)=x(x-1)^{-1}, x \in Z-\{1\}$, what is the value of $f(-3)$ ?
→
State the domain of the function, if $f: A \Rightarrow Z, A ={x /-3}$
→
Which average is calculated by considering the importance of observations of data ?
→
If fifth decile of observations $x, 3$ $2$ $4$ is $30($where $\ x>0)$, find the value of $x$.
→
In which of the following situations, mean cannot be found ?
→
Which of the following statements Is true for a symmetric distribution ?
→
Which of the following statements is false for a negatively skewed frequency distribution ?
→
Which of the following statements is true for primary data ?
→