1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the number of non-zero terms in the expansion of $${(1 + 2\sqrt 3 x)^{11}} + {(1 - 2\sqrt 3 x)^{11}}$$ (after simplification)?
A
4
B
5
C
6
D
11
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
How many terms are there in the expansion of $${(1 + 2x + {x^2})^5} + {(1 + 4y + 4{y^2})^5}$$ ?
A
12
B
20
C
21
D
22
3
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
4
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
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