Exams · BCS · Preliminary course

BCS Preliminary: don't cram, see it and remember it

A short daily plan, animated memory tricks, 1,250 questions with explanations and model tests like the real exam. The whole course is free, with no account. The practice itself is in Bangla, as in the exam; the English paper is in English.

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  • 1,250 questions
  • 10 subjects
  • 4 model tests
  • 13 memory tricks

What you get when you enrol

What to study today, and for how long, is set to fit your time.

Our best feature

Don't cram, remember with a trick

Clock-hand angle sums come up often in BCS. One formula does it: |30 × hours − 5.5 × minutes|. If the result is over 180°, take it from 360. Drag the sliders and see for yourself. There are 13 tricks like this, each in a short animation (in Bangla).

See the 13 tricks Clock and calendar questions

|30 × 3 − 5.5 × 0| = 90°

For example, at 3:40: |90 − 220| = 130°.

A glimpse of the tools

Every BCS tool in one place

Test yourself

Try one question

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All 1,250 questions in 10 subjects →

Enrol: your plan in 30 seconds

Answer two questions. The 50 quizzes and 4 model tests are laid out day by day to fit your time. No name, phone number or email needed.

How long can you study each day?

Starting with your weakest subject is usually best.

  • Completely free, no account needed
  • Progress stays only in your browser
  • Explanation with every answer
  • Works on your phone, with little data

Based on the subjects and marks of the 50th BCS. The questions are our own, not the PSC's; facts checked up to October 2026. This is practice, not a promise of a pass. The PSC sets the pass mark separately each time, so check the Bangladesh Public Service Commission's latest notice.