The upcoming SBI and IBPS Probationary Officer Written Examination has 'Reasoning' as one of the tests, apart from English and Quantitative Aptitude.
Apart from learning and gathering information from various books, it would help to take several mock tests to practice for these exams. This would help learn better and give the candidates an understanding of how to attempt questions well within the given timeframe.
The following mock test has been provided by Cyber Mock Test which is a free online mock test portal for various exam preparation. Currently it offers mock tests for Bank PO, Bank Clerical, CAT, XAT, Pega, SCJP, CLAT and IRDA exam.