Ages 10 to 12 years. The book contains six chapters covering topics like Pattern Completion, Coding-Decoding, Mirror and Water Images, Direction and Sense Test, Puzzle Test and Ranking, Alphabet Test and Logical Sequence of Words. The exercises include questions helpful in enhancing the mental abilities related to puzzle and MCQs solving in children. The patterns, illustrations, images and language style used in the book are very rich. Overall, an amazing book for growing up learners to help them meeting the future challenges of logical reasoning.