1
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
For data -1, 1, 4, 3, 8, 12, 17, 19, 9, 11; if M is the median of first 5 observations and N is the median of last five observations, then what is the value of 4M - N ? 
A
7
B
4
C
1
D
0
2
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
Let P, Q, R represent mean, median and mode. If for some distribution $5 P=4 Q=\frac{R}{2}$ then what is $\frac{P+Q}{2 P+0.7 R}$ equal to ?
A
$\frac{1}{12}$
B
$\frac{1}{7}$
C
$\frac{2}{9}$
D
$\frac{1}{4}$
3
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If G is the geometric mean of numbers 1, 2, 22, 23,.....2n-1, then what is the value of 1 + 2log2G ?
A
1
B
4
C
n - 1
D
n
4
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If H is the harmonic mean of numbers 1, 2, 22, 23, ......2n-1 what is n/H equal to ? 
A
$2-\frac{1}{2^{n+1}}$
B
$2-\frac{1}{2^{n-1}}$
C
$2+\frac{1}{2^{n-1}}$
D
$2-\frac{1}{2^{n}}$
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