One root of  x2+ kx – 8 = 0 is square of the other. Then the value of k is

1.  2

2.  8

3.  -8

4.  -2

View Answer  
4
Correct Answer :

-2


Explanation :
No Explanation available for this question

In the given figure, AB is diameter of the circle and points C and D are on the circumference such that ∠CAD = 300and∠CBA = 700. What is the measure of ∠ACD

1.   400

2.  500

3.  300

4.  900

View Answer  
4
Correct Answer :

400


Explanation :
No Explanation available for this question

The length of a ladder is exactly equal to the height of the wall it is learning against. If lower end of theladder is kept on a stool of height 3 m and the stool is kept 9 m away from the wall, the upper end of theladder coincides with the top of the wall. Then the height of the wall is

1.   12 m

2.  15 m

3.  18 m

4.  11 m

View Answer  
4
Correct Answer :

15 m


Explanation :
No Explanation available for this question

A stockist wants to make some profit by selling sugar. He contemplates about various methods . Which of the following would maximise his profit I.Sell sugar at 10% profit. II.Use 900 g of weight instead of 1 kg. III.Mix 10% impurities in sugar and selling sugar at cost price .IV.Increase the price by 5% and reduce weights by 5%.

1.  I or III

2.  II

3.  II, III and IV

4.  Profits are same

View Answer  
4
Correct Answer :

II


Explanation :
No Explanation available for this question

A man can walk up a moving ‘up’ escalator in 30 s. The same man can walk down this moving ‘up’escalator in 90 s. Assume that his walking speed is same upwards and downwards. How much time will he take to walk up the escalator, when it is not moving

1.   30 s

2.  45 s

3.  60 s

4.  90 s

View Answer  
4
Correct Answer :

45 s


Explanation :
No Explanation available for this question

Two positive integers differ by 4 and sum of their reciprocals is 2110. Then one of the numbers is

1.  3

2.  1

3.  5

4.  21

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

Three bells chime at an interval of 18 min, 24 min and 32 min. At a certain time they begin to chime together. What length of time will elapse before they chime together again

1.   2 hr and 24 min

2.  4 hr and 48 min

3.  1 hr and 36 min

4.  5 hr

View Answer  
4
Correct Answer :

4 hr and 48 min


Explanation :
No Explanation available for this question

What is the value of m which satisfies 3m2  – 21m + 30 < 0  

1.  m < 2 or m > 5

2.  m > 2

3.  2 < m < 5

4.  Both a and c

View Answer  
4
Correct Answer :

Both a and c


Explanation :
No Explanation available for this question

The rate of inflation was 1000%. Then what will be the cost of an article, which costs 6 units of currency now, 2 years from now

1.  666

2.  660

3.  720

4.  726

View Answer  
4
Correct Answer :

726


Explanation :
No Explanation available for this question

Largest value of min(2 + x2, 6 – 3x), when x > 0, is

1.  1

2.  2

3.  3

4.  4

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question
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