P, Q, S and R are points on the circumference of a circle of radius r, such the PQR is an equilateral triangle and PS is a diameter of the circle. What is the perimeter of the quadrilateral PQSR

1.  2r(1+√3)

2.  2r(2+√3)

3.  r(1+√5)

4.  2r+√3

View Answer  
4
Correct Answer :

2r(1+√3)


Explanation :
No Explanation available for this question

Let S be a set of positive integers such that every element n of S satisfies the conditions 1. 1000 ≤ n ≤ 1200 2. every digit in n is odd Then how many elements of S are divisible by 3

1.  9

2.  10

3.  11

4.  12

View Answer  
4
Correct Answer :

9


Explanation :
No Explanation available for this question

In the figure given below, ABCD is a rectangle. The area of the isosceles right triangle ABE = 7 cm2, EC = 3(BE). The area of ABCD (in cm2) is :  

1.  21

2.  28

3.  42

4.  56

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4
Correct Answer :

56


Explanation :
No Explanation available for this question

The set of all positive integers is the union of two disjoint subsets: {f(1), f(2), ......... f(n)...........}and {g (1), g (2),............g (n), ...........},where f(1) < f (2) < ....... < f (n)......, and g (1) < g (2) < ..... < g (n) . .... . , and g (n)=f (n)+1 for all n ≥ 1. What is the value of g (1)

1.  Zero

2.  Two

3.  One

4.  Cannot be determined

View Answer  
4
Correct Answer :

Two


Explanation :
No Explanation available for this question

Let x=√4 + √4 - √4 + √4 - …. to infinity. Then x equals

1.  3

2.  (√13-1)/2

3.  (√13+1)/2

4.  √13

View Answer  
4
Correct Answer :

(√13+1)/2


Explanation :
No Explanation available for this question

Let N = 142*(1423/1425). What is the remainder when N is divided by 12

1.  0

2.  9

3.  3

4.  6

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

If the equation x3 - ax2 + bx - a = 0 has three real roots, then it must be the case that,

1.  b = 1

2.  b ≠ 1

3.  a = 1

4.  a ≠ 1

View Answer  
4
Correct Answer :

b ≠ 1


Explanation :
No Explanation available for this question

A telecom service provider engages male and female operators for answering 1000 calls per day. A male operator can handle 40 calls per day where as a female operator can handle 50 calls per day. The male and the female operators get a fixed wage of Rs. 250 and Rs. 300 per day respectively. In addition, a male operator gets Rs. 15 per call he answers and a female operator gets Rs. 10 per call she answers. To minimize the total cost, how many male operators should the service provider employ assuming he has to employ more than 7 of the 12 female operators available for the job

1.  15

2.  14

3.  12

4.  10

View Answer  
4
Correct Answer :

10


Explanation :
No Explanation available for this question

If a1 = 1 and an+1 = 2an + 5, n = 1, 2 ...., then a100 is equal to :

1.  (5 *299 - 6)

2.  (5 * 299 + 6)

3.  (6 * 299 + 5)

4.  (6 * 299 - 5)

View Answer  
4
Correct Answer :

(6 * 299 - 5)


Explanation :
No Explanation available for this question

The area of the triangle whose vertices are (a, a), (a + 1, a + 1), (a + 2, a) is :

1.  a3

2.  1

3.  2a

4.  21/2

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question
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