# Quiz Discussion

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

Course Name: Quantitative Aptitude

• 1]

3

• 2]

4

• 3]

1

• 4]

2

##### 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

A square is drawn by joining the mid points of the sides of a given square in the same way and this process continues indefinitely. If a side of the first square is 4 cm, determine the sum of the areas all the square.

• 1] 32 Cm2
• 2] 16 Cm2
• 3] 20 Cm2
• 4] 64 Cm2
• 5] None of these
##### Solution
3
Discuss

A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :

• 1]

$$\frac{{{3^{10}}}}{2}$$

• 2]

310 - 210

• 3]

243 × (35 -1)

• 4]

310 - 25

• 5]

None of these

##### 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]

62

• 3]

65

• 4]

69

##### Solution
5
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
6
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] 10
• 2] 12
• 3] 9
• 4] 8
##### Solution
7
Discuss

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

• 1] -1458
• 2] -1558
• 3] -1568
• 4] -1664
##### Solution
8
Discuss

How many 2-digit positive integers are divisible by 4 or 9?

• 1]

32

• 2]

22

• 3]

34

• 4]

30

##### Solution
9
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
10
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
# Quiz