Mains-level Data Interpretation tests for IBPS PO, SBI PO and RRB PO Mains, also useful for RBI Grade B. Each test has 30 questions in 45 minutes with the multi-step working that Mains papers demand: caselets, missing-data tables, arithmetic-based DI, and mixed graphs where a chart and a table must be read together. Marking is +1 for a correct answer and -0.25 for a wrong one. The questions are set slightly above exam level so that the real paper feels easier. A new test is published every three days, and recent tests stay open for practice.