SBI PO | All stages
For candidates who want only the difficult ones: 25 hard, original Quantitative Aptitude questions on one 30-minute clock, spanning arithmetic, DI, number series and quadratics, with a full worked solution for each.
| Section | Questions |
|---|---|
| Quantitative AptitudeQuantitative Aptitude | 25 |
A few questions from this test, with the answer key and the method behind it. The full set of 25 runs under a timer, and every solution is on the analysis screen once you submit.
Quantitative Aptitude · solved example
In each, solve for x and y and give the relation: I. x² − 64 = 0 II. y² + 5y − 6 = 0
Solution
The roots are x = 8, -8 and y = -6, 1. Comparing every x with every y gives "no fixed relation".
Quantitative Aptitude · solved example
An article costing Rs 400 is sold at a profit of 25%. Find the selling price.
Solution
Profit is 25% of 400 = 100, so the selling price is Rs 500.
Quantitative Aptitude · solved example
Find the compound interest on Rs 8000 at 5% per annum for 2 years, compounded annually.
Solution
Amount = 8000(1+5/100)² = 8820. Compound interest = 8820 − 8000 = 820.
Quantitative Aptitude · solved example
In how many ways can 3 people be chosen from a group of 6?
Solution
This is 6C3 = 6!/(3!×3!) = 20.
Quantitative Aptitude · solved example
Find the next term: 3, 9, 12, 36, 39, 117, 120, ?
Solution
The operations alternate: ×3, then +3. Applying the next operation to 120 gives 360.
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Correct answer
+1
Wrong answer
-0.25
Unanswered
0
Because a blank carries no penalty, guessing only pays when you can eliminate at least two options. The analysis screen after the test shows you exactly where guessing cost you marks.