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Permutation and Combinations — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSPermutation and Combinations1 Mark
MCQ
Match the terms given in Column-I with the terms given in Column-II and choose the correct option from the codes given below.
  Column-I   Column-II
(A) If $\text{P}(\text{n},4)=20.\text{P}(\text{n},2)$ then the value of n is  (1) 28
(B) $\ ^5\text{p}_\text{r}=\ ^{26}\text{p}_\text{r-1}$ (2) 4
(C) $\ ^5\text{p}_\text{r}=\ ^{6}\text{p}_\text{r-1}$ (3) 7
(D) Value of $\frac{8!}{6!\times2!}$ is (4) 3
Codes
ABCD
  • A
    4321
  • B
    3412
  • C
    4231
  • D
    3421
✓

Answer

  1. 3421

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