Are the questions in Pearson's guide to IIM INDORE IPMAT easier than the questions in the exam paper?

Yes, the question in Pearson’s guide to IIM Indore IPMAT is easier than the actual paper. As a matter of fact, the author has been continuously revising the content every year as per the difficulty levels. One of my friends had prepared for his IPMAT from two books, which are as follows.

Pearson's Guide to IIM Indore IPM:

• The questions in this book are a bit easier than the actual IPM entrance exam. 
• The book helps to face a lot of challenges in cracking the questions from each topic. It will help in getting out of the comfort zone in quant. 
• After learning all the basics, the book will help in revising the topics at a good level. This is an overall good book for preparing for IPM.

GK publication's IIM Indore IPM:

• The questions in this book are of basic level. It is not a book of the standards of the IPM exam but you can practice various topics from different sections at a basic level.

But for preparation of IPM don’t stick to a single book. You can collect previous year’s question papers to get a better overview of the examination.