eLitmus pH Test: preparation, sections and percentile cut-offs

The pH test is a paper-and-pencil-style computerised test with three sections. You get 120 minutes total and can allocate time freely across sections.

• Quantitative — 20 questions. Number theory, probability, permutations, geometry. Notoriously harder than campus prep books.
• Problem solving / Logical reasoning — 20 questions. Cryptarithms, data sufficiency, arrangements, sets. Time-heavy.
• Verbal — 20 questions. Two long reading comprehension passages plus grammar and para-jumbles.

You do not have to answer every question. Attempting fewer with high accuracy usually scores better than blanket attempts because of negative marking.

eLitmus uses a per-section negative marking rule that kicks in only once your wrong-answer count in that section crosses a threshold — historically around 25 percent of your attempted questions. So one or two wrong answers among 15 attempts are usually free; five wrong answers among 15 start eating your score badly.

The practical rule of thumb: attempt only questions where you are more than 70 percent confident. In quant, that often means 10 to 12 attempts out of 20 is a strong strategy.

eLitmus reports your score as a percentile against every candidate who has ever taken the pH test. Mu Sigma’s classic cut-off has been around 85th to 90th percentile in each section; Fractal and Sapient are similar. That does not mean answering 90 percent of questions correctly — it means beating 90 percent of the candidate pool, which historically translates to around 10 to 14 correct in each section.

The scores you need are lower in absolute terms than you might fear, but they are still hard to hit because the questions are hard.

Two reasons. First, the quant section pulls heavily from number theory (remainders, base conversions, factor counting) that campus prep books skim over. Second, the verbal RC passages are dense and adapted from journals like The Economist, so vocabulary and inference both matter.

The good news is the pattern is stable. Working through the last few years of leaked or reconstructed pH questions is time better spent than doing generic CAT prep.

• Day 1: full 120-minute mock. Note how many you attempted and how many were correct in each section.
• Day 2: Quant — number theory, remainders, permutations. 25 problems.
• Day 3: Quant — probability, geometry, algebra. 20 problems.
• Day 4: Reasoning — cryptarithms, data sufficiency, arrangements. Slow, deliberate practice.
• Day 5: Verbal — two RC passages plus 15 para-jumbles. Time yourself strictly.
• Day 6: second full mock. Force yourself to skip low-confidence questions.
• Day 7: revise notes and reasoning shortcuts. Sleep early.