_____ is the writer of the book 'Banglar Kitpatango.'

Who wrote the book "Man's place in Nature"?

The ratio of my text books and story books is 4 : 3. If number of text books is 28, let's find the number of story books and total numbers of books.

Who is the author of the book "The Descent of Man"?

Give the name of the famous book of Darwin regarding evolution?

Mohini loves to read story books. She finishes 1/3 part of the book in an hour. Let us find, what part of book she read in 5/6 of an hour.

______wrote the book named "Origin of life on earth".

H_(2)O_(2) molecule has an open-book like structure. What is the angle between the two pages of the book in the gas phase?

Five books on english and three books on mathematics are placed at random on a bookshelf . Find the probability that the books on mathematics are placed side by side.

The ratio of the prices of two books is 5:8 . If the Price of the first book is 32.50 . Let's find the price of the other book.

The ratio of the prices of two books is 2:5 . If the price of the first book is 32.50 rupees , find the price of the other book.