1
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)?
2
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
If $p ^ x = q ^ y = r ^ z$ where x, y and z are in GP, then consider the following statements:
I. p, q and rare in AP.
II. In p, In q and Inrare in GP.
Which of the statements given above is/are correct?
3
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
If and $ (10+\log _{10}x), (10+\log _{10}y)$ are $(10 + log_{10}z)$ in AP, then consider the following statements:
I. The GM of x and z is $y ^ 2$
II. The AM of $ \log _{10}x$ and $ \log _{10}z$ is $log_{10} y $
Which of the statements given above is/are correct?
4
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
How many terms of the series 1 + 3 + 5 + 7 +... amount to a sum equal to 12345678987654321?
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