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1
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
In an AP, the ratio of the sum of the first p terms to the sum of the first q terms is p2 : q2. Which one of the following is correct?
1
The first term is equal to the common difference
2
The first term is equal to twice the common difference
3
The common difference is equal to twice the first term
4
The first term is equal to square of the common difference
2
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833

Direction : Consider the following for the items that follow :  

The product of 5 consecutive terms of an AP is 229635. The first, second and fifth terms are in GP. 

What is the common difference?

1
3
2
4
3
5
4
6
3
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833

Direction : Consider the following for the items that follow :  

The product of 5 consecutive terms of an AP is 229635. The first, second and fifth terms are in GP. 

What is the sum of all five terms? 
1
60
2
65
3
75
4
80
4
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833

The mean of n observations

1, 4, 9, 16 ...., n2 is 130. What is the value of n?

1
18
2
19
3
20
4
21