1
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
If p = (1111 ... up to n digits), then what is the value of 9p2 + p?
2
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
If an = n(n!), then what is a1 + a2 + a3 +...+ a10 equal to?
3
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
$\frac{1}{b+c}, \frac{1}{c+a},\frac{1}{a+b}$ are in HP, then which of the following is/are correct?
1. a, b, c are in AP
2. (b + c)2, (c + a)2, (a + b)2 are in GP. Select the correct answer using the code given below.
4
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Let p, q and 3 be respectively the first, third and fifth terms of an AP. Let d be the common difference. If the product (pq) is minimum, then what is the value of d?
Questions Asked from Sequence And Series (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
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