The site m4maths is really a knowledgeable and helpful site there are many things we can do at m4maths.com but the daily puzzle section is very interesting. user have to solve daily puzzles posted at 11: am daily. there are other helpful sections which help the students to prepare for many competetion exams. many maths tricks are given which are very helpful for the students of clases from 6th onwards. These tricks are explained with the help of examples and can be easily understandable. for appearing in interviews many suggestions are given. the whole site is full of knowledge. I like it. thanks to m4maths team.