One of the worst books I've ever come across. Plenty of printing errors, incorrect graphs with wrong aspect ratio which makes it next to impossible to solve the problem accurately. Also, there are too many wrong answers and vague solutions.
I admire that it has different sections according to difficulty..but there are drawbacks that really put me off. Like in the pie chart section,the different sectors of the pie chart has such similar shading that in black and white,it is impossible to make out different sectors and hence values. Also, in the line graph region,I have noticed that the division is not present for most of the graphs..in such a way taking an approximate value and finding the correct answer gets impossible. Adding to that, I have also found a few printing mistakes and mistakes in answer. In short, its not as good as I was expecting it to be.