Who among the following was the editor/author of

There are total 200 students in a school, of which 1/5 are boys. Find the number of girls in the school.

The following chart gives the expenditure incurred by a publisher to bring out a book

Each exterior angle of a regular polygon measures 9°. How many sides does the polygon have?

Sam ranked ninth from the top and thirty – eighth from the bottom in a class. How many students are there in the class?

Which of the following is equivalent to 

The value of i ∙ (j × k) + j∙ (i× k)+ k∙ (i × j) = 

By which of the following symbol all Excel formula starts?

A ________________ typically connects personal computers within a very limited geographical area, usually within a single building.