Maths book

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

If my marks in maths are less than your markes in Maths by 20% then your marks in Maths are 25% more than my marks in Maths. (True/False)

The pictograph shows different subject books which are kept in a library. Subject, Number of books, =100 books Hindi, Figure, English, Figure, History, Figure, Science, Figure, Maths, Figure, How many English books are there in the library? How many maths books are there? Which books are maximum in number? Which books are minimum in number?

Seven books Math,English,Physics, Chemistry , Biology, Hindi, Histroy are arranged one above another. Only two books are placed above chemistry book. Only one book is placed between history and Biology as between box biology and math. Three boxes are placed between box English and physics. English is placed above physics. How many total numbers of books are placed in between book history and biology ?

Seven books Math,English,Physics, Chemistry , Biology, Hindi, Histroy are arranged one above another. Only two books are placed above chemistry book. Only two book is placed between history and Biology as between box biology and math. Three boxes are placed between box English and physics. English is placed above physics. Which of the following is true regarding English book ?

Seven books Math,English,Physics, Chemistry , Biology, Hindi, Histroy are arranged one above another. Only two books are placed above chemistry book. Only two book is placed between history and Biology as between box biology and math. Three boxes are placed between box English and physics. English is placed above physics. Which book is placed at top ?