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1
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
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The sum of (p + q) th and (p $$-$$ q)th terms of an AP is equal to
A
(2p) th term
B
(2q) th term
C
twice the p th term
D
twice the q th term
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the fourth term of an AP of n terms whos sum is n(n + 1)?
A
6
B
8
C
12
D
20
4
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
The sum of the first k terms of a series S is . Which one of the following is correct?
A
The terms of S form an arithmetic progression with common difference 14.
B
The terms of S form an arithmetic progression with common difference 6.
C
The terms of S form a geometric progression with common ratio 10/7.
D
The terms of S form a geometric progression with common ratio 11/4.
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