Question Library
Browse our collection of questions across various subjects
Mathematics
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The geometric mean and harmonic mean of two non-negative observations are 10 and 8 respectively. Then what is the arithmetic…
NDA Mathematics 2012
NDA 2012
Mathematics
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A and B are two matrices such that AB = A and BA = B then what is B² equal…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the mode for the data 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22,…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the arithmetic mean of first 16 natural numbers with weights being the number itself ?
NDA Mathematics 2012
NDA 2012
Mathematics
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The number 292 in decimal system is expressed in binary system by
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the distance between the lines 3x + 4y = 9 and 6x + 8y = 18 ?
NDA Mathematics 2012
NDA 2012
Mathematics
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What is | -a² ab ac | | ab -b² bc | equal to ? | ac bc -c² |
NDA Mathematics 2012
NDA 2012
Mathematics
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If A = ( 1 2 ) and B = ( 1 0 ) then ( 2 3 ) ( 1 0…
NDA Mathematics 2012
NDA 2012
Mathematics
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Let A = {x : x is a square of a natural number and x is less than 100} and…
NDA Mathematics 2012
NDA 2012
Mathematics
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The solution of the simultaneous linear equations 2x + y = 6 and 3y = 8 + 4x will also…
NDA Mathematics 2012
NDA 2012
Mathematics
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Let U = {x ∈ N : 1 ≤ x ≤ 10} be the universal set, N being the set…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the sum of the squares of the roots of the equation x² + 2x – 143 = 0…
NDA Mathematics 2012
NDA 2012
Mathematics
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The mean and standard deviation of 100 items are 50, 5 and that of 150 items are 40, 6 respectively.…
NDA Mathematics 2014
NDA 2014
Mathematics
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The mean and standard deviation of 100 items are 50, 5 and that of 150 items are 40, 6 respectively.…
NDA Mathematics 2014
NDA 2014
Mathematics
Easy
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The mean and standard deviation of 100 items are 50, 5 and that of 150 items are 40, 6 respectively…
NDA Mathematics 2014
NDA 2014
Mathematics
Easy
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The number of telephone calls received in 245 successive one-minute intervals at an exchange is given below in the following…
NDA Mathematics 2014
NDA 2014
Mathematics
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The number of telephone calls received in 245 successive one-minute intervals at an exchange is given below in the following…
NDA Mathematics 2014
NDA 2014
Mathematics
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The number of telephone calls received in 245 successive one-minute intervals at an exchange is given below in the following…
NDA Mathematics 2014
NDA 2014
Mathematics
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Number X is randomly selected from the set of odd numbers and Y is randomly selected from the set of…
NDA Mathematics 2014
NDA 2014
Mathematics
Easy
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Number X is randomly selected from the set of odd numbers and Y is randomly selected from the set of…
NDA Mathematics 2014
NDA 2014