# Quiz Discussion

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

Course Name: Quantitative Aptitude

• 1] 219
• 2] 279
• 3] 231
• 4] 137
##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?

• 1] 28
• 2] 87
• 3] 51
• 4] 17
##### Solution
2
Discuss

If the sum of the series 2 + 5 + 8 + 11 … is 60100, then the number of terms are

• 1]

100

• 2]

150

• 3]

200

• 4]

250

##### Solution
3
Discuss

The 7th and 21st terms of an AP are 6 and -22 respectively. Find the 26th term

• 1] -34
• 2] -32
• 3] -12
• 4] -10
• 5] -16
##### Solution
4
Discuss

If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be

• 1] 0
• 2] p - q
• 3] p + q
• 4] -(p + q)
##### Solution
5
Discuss

If log 2, log (2x -1) and log (2x + 3) are in A.P, then x is equal to ___

• 1]

5/2

• 2]

log25

• 3]

log32

• 4]

3/2

##### Solution
6
Discuss

The common difference of the A.P. $$\frac{1}{{2b}} \frac{{1 - 6b}}{{2b}} \frac{{1 - 12b}}{{2b}}$$   . . . . . is

• 1] 2b
• 2] -2b
• 3] 3
• 4] -3
##### Solution
7
Discuss

Find the nth term of the following sequence :
5 + 55 + 555 + . . . . Tn

• 1]

5(10n - 1)

• 2]

5n(10n - 1)

• 3]

5/9×(10n−1)

• 4]

(5/9)n×(10n−1)

##### Solution
8
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
9
Discuss

What is the sum of the following series? -64, -66, -68, ......, -100

• 1] -1458
• 2] -1558
• 3] -1568
• 4] -1664
##### Solution
10
Discuss

The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is

• 1]

4

• 2]

1

• 3]

8

• 4]

6

# Quiz