Brahmachari Amitabha Chaitanya ji Maharaj now known as Swami Amitabha Anand Ji Maharaj is a free wandering monk following the the Monastic tradition of India. Swami is inspired by the ideals of Swami Vivekananda. An initiated disciple of Swami Ranganathanandaji, the author graduated as a topper of an University of West Bengal. Although mathematics is not his subject yet he is having keen interest in mathematics and he understands the problem of mathematics of children specially Bengalee children and in an attempt to serve mankind through his understanding of mathematics the Swami has written this book. The Swami is always having a soft corner for children and always eager to do something for the children. So this book is a offer from his side to the children of Bengal. Following the spiritual path Swamiji having a deep knowledge of Indian scriptures too. And the Swami is also adept in his own subject Zoology and genetics. Swamiji is a free wandering monk and is not bound by any organisation in that way although had deep involvement with the world renowned spiritual organisation Ramakrishna Mission. To serve the mankind is the ideal of the Swami and this book is a step to implement that Ideal. Swamiji held his ideal very high and love his country men dearly. Having deep fascination for nature also. A spiritualist and philanthropher that's how the Swami can be identified. A meritorious student and success full teacher also. Swamiji taught the students of R.K. Mission Vidyapith, Deoghar and RK Mission Rahara. Swami is fluent in English equally and also speaks Hindi and able to understand Sanskrit too....He is a thinker and writer. Although this is his first published book, we are expecting more from him in future. May he live long.