1
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If mean and variance of a binomial variate X are 2 and 1 respectively, then the probability that X takes a value greater than 1, is
2
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Seven unbiased coins are tossed 128 times. In how many throws would you find at least three heads?
3
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A coin is tossed five times. What is the probability that heads are observed more than three times ?
4
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statement(s) is/are correct?
1. The probability that no head is observed is $${1 \over {16}}$$.
2. The probability that the experiment ends with three tosses is $${1 \over {8}}$$.
Select the correct answer using the code given below.
1. The probability that no head is observed is $${1 \over {16}}$$.
2. The probability that the experiment ends with three tosses is $${1 \over {8}}$$.
Select the correct answer using the code given below.
Questions Asked from Probability (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
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
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies