eleven books,consisting of 5 engineering books , 4 maths books,2 physics books are arranged in a shelf at random .what is the probability that books of each kind are all together?
Choose the correct choice from the following:
A) 0.001443
B) 0.002443
C) 0.003443
D) 0.004443
E) 0.005443
3 lots can be arranged in 5!x3!x4!x2!   total arrangements possible= 11!   hence probability of the same=(5!x3!x4!x2!)/11!=0.001443   0.001443NSWER:0.001443
<result>A</result>
eleven books,consisting of 5 engineering books , 4 maths books,2 physics books are arranged in a shelf at random .what is the probability that books of each kind are all together?