RRB Group D reasoning practice — Master Mental Ability

Why start now

The section everyone leaves for last is the one worth the most marks.

Science, Maths and General Awareness are things you know or you don't — you can revise them into place. Reasoning isn't like that. It's a way of seeing, and it gets faster with practice, which means it gets better slowly and then stays.

That's exactly why it's worth starting early, and exactly why it's the section most people leave alone until the end. Thirty questions is the largest block of marks on the paper, and it's the block that rewards months rather than weeks.

One CBT decides this exam. Start the section that compounds.

Start today!

What · the exam

One paper. Four sections. One of them is a skill.

A single Computer Based Test decides it. The PET that follows is qualifying only.

What you know

Science, Maths and General Awareness

70 questions · facts and formulas · revisable

General Science — 25 questions
Mathematics — 25 questions
General Awareness & Current Affairs — 20 questions

Prepared from books, in the ordinary way.

How you think

General Intelligence & Reasoning

30 questions · the largest single section · 1/3 negative

Analogies, series, classification
Coding-decoding, mathematical operations
Relationships, directions, Venn diagrams
Syllogism, analytical reasoning

Not in any book — a trainable skill.

How · train the section

The largest section, and the only trainable one.

The reasoning section isn't in a syllabus you can read. It's a thinking skill, built by practising the right questions, the right amount, over time. That's exactly what Master Mental Ability does — and the RRB's own notice lists analogies, series, coding and decoding, syllogism and Venn diagrams, which is precisely what the app trains.

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Adapts to you

Harder as you improve, easier when you slip. No time wasted on what you've already got.

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Back before you forget

Spaced repetition returns a question right as it's about to fade — so it's still there on exam day.

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Solve first, then see

You reason it out before the answer shows. That effort is where recognition gets built.

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Calm before the clock

A moment to settle before each session. The same calm ninety minutes on a clock takes away.

What this doesn't cover: Group D is four sections. We train one — General Intelligence and Reasoning. General Science, Mathematics and General Awareness need their own preparation, and we don't pretend otherwise. Inside reasoning, we train the core: analogies, series, classification, coding-decoding, relationships, directions, Venn diagrams and syllogisms. Data interpretation and statement–argument questions aren't what this app is for.

No download needed

An app you don't download.

Open it in the phone's browser and start at once. One tap adds it to the home screen — it sits there like any app. Works on an older phone, a shared phone, any phone. No app store, nothing to chase, no space taken up.

Opens instantlyAdd to home screenWorks on any phoneNothing to install

See it in seconds

No account, no card, no install. Solve one full session, then decide.

Start free

Built by

In 2007, in his second year at IIT Delhi, Vineesh wrote a book — Master Mental Ability in 30 Days. It has sold year after year ever since, without the publisher ever marketing it.

In the years since, he built other learning products and spent a decade working with children of every background in a holistic learning centre.

This app goes far beyond that book — everything he's learned about how people actually learn, built into something you practise, not just read.

No risk to you

Don't trust us. See it work.

Try free

Solve a full session, no registration. Decide nothing yet.

Register

Like it? Sign up for 2 more days free. No payment, no auto-debit.

Practise daily

A little each day. The app decides what to practise and when to bring it back.

Share to keep learning free

Invite a friend preparing for Group D — you both earn more free days.

Your questions

Common questions

Is it really free? Will money get taken from my account?

It's free to try — no signup to start, no card, no auto-debit, nothing taken silently. Later, one payment unlocks all the content for a full year — it's a one-time payment, not a subscription, and never an auto-debit. Exact pricing is coming soon. And you'll always be able to try free first — and share the app to keep learning free.

Is this app enough to clear Group D?

No. Group D is four sections and this trains one — the largest one. General Science, Mathematics and General Awareness need their own preparation. What we do, we do properly.

Which section carries the most marks?

General Intelligence and Reasoning: 30 of the 100 questions, against 25 for Science, 25 for Maths and 20 for General Awareness. It is the biggest section and the only one that is a skill rather than a subject.

I have very little time before my exam. Is this any use?

Some. Practice always beats no practice. But be honest with yourself about what a hundred questions in ninety minutes means: recognition is built over months, not in a week. Start anyway — the next cycle is closer than it feels.

Is the app in Hindi?

The full app is coming in Hindi — questions and solutions both. For now it's in English. Worth knowing either way: the RRB sets this paper in Hindi, English and 13 regional languages.

When is the next Group D, and where do I apply?

Only on the Railway Recruitment Boards' own portal, rrbapply.gov.in — never through an agent and never through us. The RRBs publish each recruitment as a Centralised Employment Notification (CEN) on the RRB websites. CEN 08/2024 was the most recent Level-1 notification. Check rrbapply.gov.in for the current cycle.

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Railway Group D

The reasoning section, in numbers