# Quiz Discussion

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

Course Name: Quantitative Aptitude

• 1]

28

• 2]

87

• 3]

51

• 4]

17

##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

After striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen. Find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres.

• 1] 540 m
• 2] 960 m
• 3] 1080 m
• 4] 1020 m
• 5] 1120 m
##### Solution
2
Discuss

The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th term?

• 1] 23
• 2] 17
• 3] 20
• 4] 26
##### Solution
3
Discuss

Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then

• 1]

a = 7/4, r = 3/7

• 2]

a = 2, r = 3/8

• 3]

a = 3, r = 1/4

• 4]

a = 3/2, r = ½

##### Solution
4
Discuss

(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......

• 1]

$$\frac{{n\left( {n + 1} \right)}}{2}$$

• 2]

$$\frac{{n\left( {n - 1} \right)}}{2}$$

• 3]

$${n^2}$$

• 4]

n

##### Solution
5
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

##### Solution
6
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
7
Discuss

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?

• 1] 192
• 2] 230
• 3] 102
• 4] 214
##### Solution
8
Discuss

The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?

• 1] -29
• 2] -41
• 3] -47
• 4] -35
##### Solution
9
Discuss

Sum of n terms of the series $$\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} +$$ ....... is

• 1]

$$\frac{{n\left( {n + 1} \right)}}{2}$$

• 2]

$$2n\left( {n + 1} \right)$$

• 3]

$$\frac{{n\left( {n + 1} \right)}}{{\sqrt 2 }}$$

• 4]

1

##### Solution
10
Discuss

The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

• 1] 34
• 2] 28
• 3] 25
• 4] 31
# Quiz