5 different Engineering, 4 different Mathematics and2 different Chemistry books are placed in a shelf at random. The probability that the books of each kind are all together is

5different Engineering,4 different Mathematics and2different Chemistry books are placed in a shelf at random.The probability that the books of each kind are all together is

5 Engineering , 4 Mathematics and 2 Chemistry books are placed on a shelf at random. The probability that the books of each kind are all together is

Eleven books, consisting of five Engineering books, four Mathematics books and two Physics books, are arranged in a shelf at random. What is the probability that the books of each kind are all together?

The number of ways in which 5 mathematics 4, physcis 2, chemistry books can be aranged in a shelf so that the books of each subject are kept together is

The number of ways in which 5 mathematics , 4 physics , 2 chemistry books can be arranged in a shelf so that the books of mathematics books are kept together is

Find the number of ways of arranging 5 different mathematics books, 4 different Physics books and 3 different chemistry books such that the books of the same subject are together.

A total of 5 different mathematics books,4 different physics books and 2 differentchemistry books are to be arranged in a row in a book shelf.Which of the following is/are true?