In how many ways can 4 books of Mathematics, 3 books of English and 2 books of Hindi can be arranged if the books of one subject are always together?

In how many ways 3 books of Mathematics, 4 books of Physics and 2 books of Chemistry can be arranged on a table if all the books of one subject placed together?

In how many ways 3 books of Mathematics,4 books of Physics and 2 books of Chemistry can be arranged on a table if all the books of one subject placed together?

In how many ways can, 3 books on computer, 3 books on Economics and 5 books on commerce be arranged, if the books of each subject are kept together.

In how many ways can 4 books of math and 3 books of English and 5 books of sociology be arranged on a shelf so that (a) same subject are together (b) only sociology books are kept together (c) only English books are kept together

The number of ways in which 4 books on Mathematics and 3 books on English can be placed in a shelf, so that the books on the same subject always remain together is

In how many ways 7 books can be arranged from 10 books?

In how many ways can 21 books on English and 19 books on Hindi be placed in a row on a shelf so that two books on Hindi may not be together? (A) 770 (B) 385 (C) 1540 (D) 399

In how many ways can 21 books on English and 19 books on Hindi be placed in a row on a shelf so that two books on Hindi may not be together? (A) 770 (B) 385 (C) 1540 (D) 399

In how many ways 4 mathematics books , 3 physics books, 2 chemistry books and 1 biology book can be arranged on a shelf so that all books of the same subjects are 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