# Quantitative Aptitude:August 19 Interactive Quiz

12 Questions | Total Attempts: 1653  Settings  This is an interactive quiz on quantitative aptitude created on Aug-16-2011

• 1.
For the equation px2 + px + q = 0, the value of the discriminant is zero. The roots of this equation are:
• A.

Imaginary

• B.

Irrational

• C.

Rational and unequal

• D.

Rational and equal

• E.

Real and equal

• 2.
The sum of two times one natural number and three times another natural number is less than 24. If the first natural number is less than or equal to eight, the highest value of the second natural number is:
• A.

5

• B.

6

• C.

7

• D.

8

• E.

9

• 3.
A shopkeeper bought 800 kg rice at Rs 3840. He had to sell it at a loss of as much as he received for 16 kg. The selling price (per kg, in Rs) will be:
• A.

Rs 40

• B.

Rs 100

• C.

Rs 50

• D.

Rs 80

• E.

Rs 65

• 4.
There are 7 points in a plane, no three of them being collinear. The number of triangles formed by using these points is:
• A.

7

• B.

21

• C.

10

• D.

4

• E.

35

• 5.
In how many ways can we arrange 6 books on different subjects, in a shelf?
• A.

6

• B.

60

• C.

Infinite

• D.

720

• E.

120

• 6.
If the diameter of a wire is increased by 10%, by how much per cent approximately, will its length be decreased, if the volume remains the same?
• A.

15

• B.

16

• C.

17

• D.

18

• E.

19

• 7.
There are two numbers R and S, related by the equation R = S2. Now, if S is increased by 10%, what will happen to R?
• A.

R increases by 10%

• B.

R decreases by 10%

• C.

R increases by 21%

• D.

R decreases by 21%

• E.

R remains unchanged

• 8.
A cistern is two-third full of water. Pipe A can fill the remaining part in 12 minutes and pipe B in 8 minutes.Once the cistern is emptied, how much time will they take to fill it together completely?
• A.

12 minutes

• B.

12 min, 12 sec

• C.

14 min, 24 sec

• D.

10 min, 12 sec

• E.

14 min, 40 sec

• 9.
A train running at the speed of 90 km/hr crosses a platform of length 160 m in 10 seconds. What is the length of the train (in metres)?
• A.

60

• B.

90

• C.

150

• D.

140

• E.

40

• 10.
The average of 4 consecutive even numbers is 9.Which of these is the first number?
• A.

6

• B.

4

• C.

8

• D.

10

• E.

12

• 11.
A certain sum of money doubles in 10 years at simple interest. What is the rate of interest?
• A.

20 %

• B.

30 %

• C.

10 %

• D.

5 %

• E.

12 %

• 12.
What is the maximum value of the function f(x) = x2 + 5x + 16
• A.

16/5

• B.

4/3

• C.

16

• D.

39/4

• E.

25/16

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