Mathematics Quiz - Competitive Exams NDA
Free practice quiz: Mathematics (Competitive Exams NDA). 63 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
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What is the value of ∫₀¹ x² dx?
- 1/2
- 1/3
- 1
- 1/4
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Answer: B. 1/3
The value of the determinant | 1 2 3 | | 4 5 6 | | 7 8 9 | is:
- -1
- 1
- 0
- 2
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Answer: C. 0
The value of the definite integral ∫₀¹ (1 - x)ⁿ dx, where n is a positive integer, is:
- 1/(n+1)
- n/(n+1)
- 1/(n-1)
- 1/n
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Answer: A. 1/(n+1)
The value of the limit lim_{x→∞} (√(x² + x) - x) is:
- 0
- ∞
- 1/2
- 1
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Answer: C. 1/2
The value of cot(75°) is:
- 2 + √3
- √3 + 1
- 2 - √3
- √3 - 1
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Answer: C. 2 - √3