1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A geometric progression (GP) consists of 200 terms. If the sum of odd terms of the GP is m, and the sum of even terms of the GP is n, then what is its common ratio?
A
m / n
B
n / m
C
m + (n / m)
D
n + (m / n)
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the value of 1 $$-$$ 2 + 3 $$-$$ 4 + 5 $$-$$ ......... + 101?
A
51
B
55
C
110
D
111
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the nth term of the sequence 25, $$-$$ 125, 625, $$-$$ 3125, ........ ?
A
($$-$$5)2n $$-$$ 1
B
($$-$$1)2n 5n + 1
C
($$-$$1)2n $$-$$ 1 5n + 1
D
($$-$$1)n $$-$$ 1 5n + 1
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The numbers 1, 5 and 25 can be three terms (not necessarily consecutive) of
A
only one AP
B
more than one but finite numbers of APs
C
infinite number of APs
D
finite number of GPs
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