1
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
If a, b, c are in GP where a > 0, b > 0, c > 0, then which of the following are correct?
1. a2, b2, c2 are in GP
2. $\frac{1}{a}, \frac{1}{b}, \frac{1}{c}$ are in GP
3. $\sqrt {a}, \sqrt{b}, \sqrt{c} $ are in GP
Select the correct answer using the code given below :
2
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
If $\frac{a+b}{2}, b, \frac{b+c}{2}$ are in HP, then which one of the following is correct?
3
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
If the sum of the first 9 terms of an AP is equal to sum of the first 11 terms, then what is the sum of the first 20 terms ?
4
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
If the 5th term of an AP is $\frac{1}{10}$ and its 10th term is $\frac{1}{5},$ then what is the sum of first 50 terms ?
Questions Asked from Sequence And Series (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
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Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
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Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
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