BOOK-1 LIVE TEST

Among four books, Book 1 is twice as heavy as Book 2's weight. Book 4 is 60 grams more as compared to Book 2 but 60 grams less as compared to Book 1. Which book is the heaviest?

Statement : 1.All books are magazines. 2.Some books are novels. Conclusion: I. Some magazines are books. II. No magazine is a book. III. No novel is a magazine.

Discussion OF Chapter test-1 || chapter test -2 (Q1-7)

A student can buy maximum of 'n' books from the (2n+1) books.If he can buy these books in 63 ways,then n equals to