1
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If logxa, ax and logbx are in GP, then what is x equal to ? 
A
loga(logba) 
B
logb(logab) 
C
$\frac{\log _a\left(\log _b a\right)}{2}$
D
$\frac{\log _b\left(\log _a b\right)}{2}$
2
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If $2^{\frac{1}{c}}, 2^{\frac{b}{a c}}, 2^{\frac{1}{a}}$ are in GP, then which one of the following is correct ? 
A
a, b, c are in AP 
B
a, b, c are in GP 
C
a, b, c are in HP 
D
ab, bc, ca are in AP 
3
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
The first and the second terms of an AP are $\frac{5}{2}$ and $\frac{23}{12}$ respectively. If nth term is the largest negative term, what is the value of n ? 
A
5
B
6
C
7
D
n cannot be determined
4
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
For how many integral values of k, the equation x2 - 4x + k = 0, where k is an integer has real roots and both of them lie in the interval (0, 5) ? 
A
3
B
4
C
5
D
6
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