1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the middle term in the expansion of $${\left( {{x^2} + {1 \over x}} \right)^{2n}}$$ is $$184756{x^{10}}$$, then what is the value of n?
A
10
B
8
C
5
D
4
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the constant term in the expansion of $${\left( {\sqrt x - {k \over {{x^2}}}} \right)^{10}}$$ is 405, then what can be the values of k?
A
$$\pm$$ 2
B
$$\pm$$ 3
C
$$\pm$$ 5
D
$$\pm$$ 9
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the number of terms in the expansion of $${[{(2x - 3y)^2}{(2x + 3y)^2}]^2}$$ ?
A
4
B
5
C
8
D
16
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
In the expansion of (1 + ax)n, the first three terms are respectively 1, 12x and 64x2. What is n equal to?
A
6
B
9
C
10
D
12
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