(n+1)r where r=n

1.  ((n-1)(n)(n+1))/2

2.  n((n+1)2)/2

3.  n((n-1)2)/2

4.  n2/2

View Answer  
4
Correct Answer :

n((n+1)2)/2


Explanation :
No Explanation available for this question

The average of ‘n’ numbers is z. If the number x is replaced by the number x1, then the average becomes z1.Find the relation between n, z, z1, x and x1

1.  [((z1-2)/x1-x)=1/n]

2.  [((x1-x)/z1)=1/n]

3.  [((z-z1)/x-x1)=1/n]

4.  [((x-x1)/z-z1)=1/n]

View Answer  
4
Correct Answer :

[((z-z1)/x-x1)=1/n]


Explanation :
No Explanation available for this question

In a AABC, AD is the bi-sector of ZBAC, AB = 8 cm, BD = 6 cm and DC = 3 cm. Find AC.  

1.  4 cm

2.  6 cm

3.  3 cm

4.  5 cm

5.  None of these

View Answer  
5
Correct Answer :

4 cm


Explanation :
No Explanation available for this question

The average salary of workers in AMS careers is Rs.2,000 the average salary of faculty being Rs.4000 and the management trainees being Rs.1,250.The total number of workers could be

1.  450

2.  300

3.  110

4.  500

View Answer  
4
Correct Answer :

110


Explanation :
No Explanation available for this question

If ABC is a quarter circle and a circle is inscribed in it and if AB = 1 cm, find radius of smaller circle  

1.  √2- -1

2.  ( √2+ 1)/2

3.  √2-1/2

4.  1-2√2

5.  None of these

View Answer  
5
Correct Answer :

√2- -1


Explanation :
No Explanation available for this question

ABC is an equilateral tri angle. Point D is on AC and point E is on BC, such that AD = 2CD and CE = E B. If we draw perpendiculars from D and E to other two sides and find the sum of the length of two perpendiculars for each set, that is, for D and E individually and denote them as per (D) and per (E) respectively, then which of the following option will be correct  

1.  Per (D)> per (E)

2.  Per (D) < per (E)

3.  Per (D) = per (E)

4.  None of these

5.   Cannot be determined

View Answer  
5
Correct Answer :

Per (D) = per (E)


Explanation :
No Explanation available for this question

Find the average runs scored by the first four batsmen.

1.  83.5

2.  60.5

3.  66.8

4.  Cannot be determined

View Answer  
4
Correct Answer :

Cannot be determined


Explanation :
No Explanation available for this question

The maximum average runs scored by the first five batsmen could be

1.  80.6

2.  66.8

3.  76

4.  Cannot be determined

View Answer  
4
Correct Answer :

80.6


Explanation :
No Explanation available for this question

Two friends Shayam and Kailash own two versions of a car. Shayam owns the diesel; version of the car, while kailash owns the petrol version. Kailas’s car gives an average that is 20% higher than shayam’ s (in terms of litres per kilometer). It is known that petrol costs 60% of its price higher than diesel. If diesel costs Rs. 12.5 per litre, then the difference in the cost of travel per kilometre between Kailash’s and Shayam’s is (assume an average of 20 km per litre for Shayam’s car also assume that petrol is 50% of its own price higher than diesel)

1.  Rs. 1.75

2.  Rs. 0.875

3.  Rs. 1.25

4.  Rs. 1.125

5.  None of these

View Answer  
5
Correct Answer :

Rs. 0.875


Explanation :
No Explanation available for this question

ABCD is a trapezium in which AB is parallel to DC, AD = BC, AB = 6 cm, AB = EF and DF = EC. If two lines AF and BE are drawn so that area of ABEF is half of ABCD. Find DF/CD.  

1.  1/4

2.  1/3

3.  2/5

4.  1/6

5.  2/3

View Answer  
5
Correct Answer :

1/3


Explanation :
No Explanation available for this question
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