Quiz Discussion

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?

Course Name: Quantitative Aptitude

• 1]

56

• 2]

62

• 3]

65

• 4]

69

Solution
No Solution Present Yet

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# Quiz
1
Discuss

If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =

• 1]

3

• 2]

4

• 3]

1

• 4]

2

Solution
2
Discuss

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

• 1] 104
• 2] 140
• 3] 84
• 4] 98
Solution
3
Discuss

The first term of an Arithmetic Progression is 22 and the last term is -11. If the sum is 66, the number of terms in the sequence are:

• 1]

9

• 2]

10

• 3]

11

• 4]

12

Solution
4
Discuss

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?

• 1] 56
• 2] 65
• 3] 59
• 4] 62
Solution
5
Discuss

The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by $$\frac{{{l^2} - {a^2}}}{{k - \left( {l + a} \right)}}$$   then k = ?

• 1] S
• 2] 2S
• 3] 3S
• 4] None of these
Solution
6
Discuss

The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is

• 1]

5

• 2]

10

• 3]

12

• 4]

14

Solution
7
Discuss

If the sums of n terms of two arithmetic progressions are in the ratio $$\frac{{3n + 5}}{{5n + 7}}$$   then their nth terms are in the ration

• 1]

$$\frac{{3n - 1}}{{5n - 1}}$$

• 2]

$$\frac{{3n + 1}}{{5n + 1}}$$

• 3]

$$\frac{{5n + 1}}{{3n + 1}}$$

• 4]

$$\frac{{5n - 1}}{{3n - 1}}$$

Solution
8
Discuss

If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal to

• 1] 4
• 2] 6
• 3] 8
• 4] 10
Solution
9
Discuss

If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:

• 1]

1

• 2]

2

• 3]

3

• 4]

4

Solution
10
Discuss

Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is

• 1] 11
• 2] 3
• 3] 8
• 4] 5
# Quiz