# Quiz Discussion

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

Course Name: Quantitative Aptitude

• 1] -2
• 2] 3
• 3] -3
• 4] 6
##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

The two geometric means between the number 1 and 64 are

• 1]

8 and 16

• 2]

2 and 16

• 3]

4 and 8

• 4]

4 and 16

##### Solution
2
Discuss

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?

• 1] 219
• 2] 279
• 3] 231
• 4] 137
##### Solution
3
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
4
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
##### Solution
5
Discuss

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

• 1]

3

• 2]

4

• 3]

1

• 4]

2

##### Solution
6
Discuss

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?

• 1] 25
• 2] 29
• 3] 21
• 4] 33
##### Solution
7
Discuss

For an A.P. if a25 - a20 = 45, then d equals to:

• 1] 9
• 2] -9
• 3] 18
• 4] 23
##### Solution
8
Discuss

If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then $$\frac{{{S_1}}}{{{S_2}}}$$

• 1]

$$\frac{{2n}}{{n + 1}}$$

• 2]

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

• 3]

$$\frac{{n + 1}}{{2n}}$$

• 4]

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

##### Solution
9
Discuss

The sum of first five multiples of 3 is:

• 1]

90

• 2]

72

• 3]

55

• 4]

45

##### Solution
10
Discuss

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

• 1]

-2

• 2]

-3

• 3]

2

• 4]

3

# Quiz