Ages 8 to 10 years. Development of logical reasoning skills in children is one among the mandatory things and it should be taken care at all the stages. Keeping this point in mind, Pegasus developed a series of six books on logical reasoning and this is the fourth in the series. It contains chapters on topics like Pattern Completion, Alphabet Test, Coding-Decoding, Ranking Test, Grouping of Figures and Figure Matrix and Mirror Images. The exercises have been designed very carefully, keeping in mind the interest and understanding level of little children. The language style and images used in the book are easily understandable.