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Welcome to the brave new world of high-tech dentistry. Here, teeth stained by coffee, tea and tobacco are bleached considerably white in a single sitting, and crowned and laminated in a single visit. Infected gum tissue can be vaporized bloodlessly in a few minutes with lasers. Even thou..

There are 19 books on Geography, 16 books on Zoology and 20 books on Math in a bundle of books. Three books are selected one after the other. Find P(book on Zoology, book on Geography, no book on Math). => 2 321 or 152 ..

There are 6 drawing books and 15 work books in a school bag. A book is picked from the bag. Which book is least likely to be picked? => drawing book or work book or both are equally likely or none of the above..

Botanical survey of India publishes this book. This book provides information about plant species which are rare, endangered or endemic, but all of which are grown in botanical garden..

Estimate the perimeter of the cover of the book. => 98 cm or 238 cm or 190 cm or 138 cm..

It is a sort of publication, which is published by IUCN, which provides information regarding threatened species of plants and animal..

A librarian recorded the number of books on each subject. Find the number of math books in the library. => 22 or 23 or 20 or 24..

A book costs $25. How much would 4 such books cost? => $29 or $21 or $100 or $80..

16 books in 2 bags. How many books in each bag? => 16 ÷ 2 = 8 or 2 ÷ 16 = 8 or 16 ÷ 2 = 9 or 16 - 2 = 9..

John bought some books for $100. If the cost of each book were $5 more, then John would get 10 books less for the same price. What is the cost of each book? => $100 or $5 or $10 or $15..