Permutations And Combinations Question 376
Question: From 6 different novels and 3 different dictionaries, 4 novels and 1 dictionary are to be selected and arranged in a row on a shelf so that the dictionary is always in the middle. Then the number of such arrangement is:
Options:
A) At least 500 but less than 750
B) At least 750 but less than 1000
C) At least 1000
D) Less than 500
Correct Answer: C
Show Answer
Answer:
Solution:
$ \therefore $ Total ways of arrangement $ {{=}^{6}}C_4{{\times }^{3}}C_1\times 4!=1080 $
BETA
