Question

In Daya's bag there are 3 books of History, 4 books of Science
and 2 books of Maths. In how many ways can Daya arrange the
books so that all the books of same subject are together?​

Answer 1

Step-by-step explanation:

• The three types of books are History, science and maths.  
• So the books can be arranged in 3! Ways
•                                                       = 3 x 2 x1
•                                                        = 6
• Now each type of books can be arranged as
• History 3 books can be arranged in number of ways 3!  = 3 x 2 x 1 = 6.
• Science 4 books can be arranged in number of ways 4!  = 4 x 3 x 2 x 1 = 24.
• Maths 2 books can be arranged in number of ways 2!  = 2 x 1 = 2 .
• Therefore the total number of ways Daya can arrange  will be  6 x 6 x 24 x 2 = 1728 ways.

Reference link will be

https://brainly.in/question/8103215

Answer 2

Answer:

Step-by-step explanation: