Question Library
Browse our collection of questions across various subjects
Mathematics
Easy
View
A bag contains 5 black and 3 white balls. Two balls are drawn at random one after the other without…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Four coins are tossed simultaneously. What is the probability of getting exactly 2 heads?
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
What is the probability of getting a sum of 7 with two dice?
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
In throwing a six-faced die, let A be the event that an even number occurs, B be the event that…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Consider a random experiment of throwing together a die and two coins. The associated sample space has
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
In how many ways can the letters of the word ‘GLOOMY’ be arranged so that the two O’s should not…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Consider the following frequency distribution : If the total of the frequencies is 100 and mode is 25, then which…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
The harmonic mean H of two numbers is 4 and the arithmetic mean A and geometric mean G satisfy the…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Consider the following statements : 1. Both variance and standard deviation are measures of variability in the population. 2. Standard…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
The marks obtained by 13 students in a test are 10, 3, 10, 12, 9, 7, 9, 6, 7, 10,…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
The standard deviation of the observations 5, 5, 5, 5, 5 is
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
If two lines of regression are perpendicular, then the correlation coefficient r is
NDA Mathematics 2013
NDA 2013
General Ability
Easy
View
Variance is always independent of the change of
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Marks obtained by 7 students in a subject are 30, 55, 75, 90, 50, 60, 39. The number of students…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
The average marks obtained by the students in a class are 48. If the average marks obtained by 25 boys…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
If θ is the angle between the vectors 4 (i^ – k^) and i^ + j^ + k^, then what…
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
Which one of the following vectors is normal to the vector i^ + j^ + k^?
NDA Mathematics 2013
NDA 2013
Mathematics
Easy
View
What is the value of sin 420° · cos 390° + cos(-300°) · sin(-330°)?
NDA Mathematics 2012
NDA 2012
Mathematics
Easy
View
If ABCD is a cyclic quadrilateral then what is sin A + sin B – sin C – sin D…
NDA Mathematics 2012
NDA 2012
Mathematics
Easy
View
What is the perpendicular distance of the point (x, y) from x-axis?
NDA Mathematics 2012
NDA 2012