From Reader's Digest's Mind Stretchers books, these math puzzles ... Was this a hard math problem, or did you get the answer right? To open this safe, you have to replace the question marks ...
NCERT Books for Class 12 Maths: NCERT Books for Class 12 are prescribed ... question formats that may appear in the board exam. 5. Answer Writing Style: Referring to NCERT books also familiarises ...