Mental ability speed drills

Story hook

A timer beeps. 30 seconds left, two CSAT questions remaining.

Q79: If 12 + 5 = 17, 9 + 7 = 16, 14 + 6 = 20, then 11 + 8 = ?

Q80: Find the next term in the series: 2, 6, 12, 20, 30, ?

The well-trained candidate scans both in 3 seconds. Q79 is direct arithmetic (no trick — 11 + 8 = 19). Q80 is a difference-progression series: 4, 6, 8, 10 → next gap is 12, so the next term is 42.

She marks both — 5 marks gained in 30 seconds.

The candidate next to her spent the same 30 seconds re- reading Q79 looking for the "catch" that wasn't there. She left both blank. 5 marks lost.

The CSAT is 80 questions in 120 minutes = 90 seconds per question on average. But 20-25 questions are speed-able in 30-45 seconds — direct calculations, simple series, straightforward analogies, basic pattern recognition. Speed drills harvest these. A candidate who picks up 30 extra marks from speed-able questions crosses the qualifying line even if her RC accuracy is mediocre.

Why this matters for UPSC

In CSAT Paper II (33% = 66/200 to qualify):

• 20-25 "speed-able" questions per paper = 50-60 marks if attempted accurately at 30-45 sec each.
• These include: simple arithmetic, basic series, direct analogies, classification, alphabet-position, simple coding, missing-numbers.
• A candidate who doesn't drill these spends 90+ seconds on each, attempts maybe 60 questions total, and leaves marks unharvested.
• A drill-trained candidate finishes the easy 25 in 15 minutes, leaving 105 minutes for the hard 55.
• Time-banking is the single most under-appreciated CSAT skill.