Quantitative Aptitude · solved example
Simplify using the correct order of operations: 24 + 6 × 5 − 8 ÷ 2.
- 50Correct
- 46
- 54
- 44
Solution
Do multiplication and division first: 6 × 5 = 30 and 8 ÷ 2 = 4. Then 24 + 30 − 4 = 50.
SBI PO | Preliminary Examination
SBI PO Prelims: Quantitative Aptitude sprint 2 (22 questions)
A second single-clock Quantitative Aptitude sectional at Prelims pace: 22 original questions spanning simplification, series, quadratics, DI, arithmetic, mensuration and fast calculation, each with a worked solution and one fourth negative marking.
Before you start
- One clock of 22 minutes for 22 questions, matching the pace of the Prelims quant section.
- Every question carries one mark and one fourth of a mark is deducted for a wrong answer. Unanswered questions carry no penalty.
- Every question is original, written to the Prelims pattern, with a worked solution shown after you submit.
Sections in this test
| Section | Questions |
|---|---|
| Quantitative AptitudeQuantitative Aptitude | 21 |
Sample questions with worked solutions
A few questions from this test, with the answer key and the method behind it. The full set of 21 runs under a timer, and every solution is on the analysis screen once you submit.
Quantitative Aptitude · solved example
Find the approximate value: 39.9% of 250 + 20.1% of 150.
- 130Correct
- 120
- 140
- 110
Solution
Round to 40% of 250 = 100 and 20% of 150 = 30, giving about 130.
Quantitative Aptitude · solved example
Find the next term: 5, 11, 23, 47, ?
- 95Correct
- 94
- 96
- 93
Solution
Each term is double the previous plus one: 47 × 2 + 1 = 95.
Quantitative Aptitude · solved example
Find the wrong term in the series: 2, 6, 12, 20, 30, 44.
- 44Correct
- 30
- 20
- 12
Solution
The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, 6×7=42. So the last term should be 42, not 44.
Quantitative Aptitude · solved example
I. x² − 9x + 20 = 0 II. y² − 11y + 30 = 0. Determine the relation between x and y.
- x ≤ yCorrect
- x ≥ y
- x > y
- x < y
Solution
x = 4 or 5; y = 5 or 6. The largest x is 5 and the smallest y is 5, so every x is less than or equal to every y, giving x ≤ y.
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How this test is marked
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.