Let x, y be two positive numbers such that x+y=1.Then, the minimum value of (x+1/x)2 + (y+1/y)2 is

1.  12

2.  20

3.  12.5

4.  13.3

View Answer  
4
Correct Answer :

13.3


Explanation :
No Explanation available for this question

Let a1 = 1 and an be the number formed by putting the digits of n at the end of an−1. For k = 1 to 2008, compute the number of ak that aredivisible by 3

1.  2008

2.  1338

3.  669

4.  1004

5.  502

View Answer  
5
Correct Answer :

1338


Explanation :
No Explanation available for this question

 In Quadrilateral ABCD < B = 900, AB = 3, BC = 4 and CD = 5.Find the area of the Quadrilateral

1.  6

2.  12

3.  18

4.  24

5.  none of these

View Answer  
5
Correct Answer :

18


Explanation :
No Explanation available for this question

If a + b + c = 3, a2 + b2 + c2 = 9, a3 + b3 + c3 = 24 , Then find a4 + b4 + c4

1.  27

2.  69

3.  24

4.  36

5.  none of these

View Answer  
5
Correct Answer :

69


Explanation :
No Explanation available for this question

If x + a is the HCF of x2 + px +q and x2 + kx + m, what is the value of  

1.  a

2.  

3.  a2

4.  

View Answer  
4
Correct Answer :

a


Explanation :
No Explanation available for this question

The positive integers a and b are such that the numbers 15a+16b and 16a−15b are both squares of positive integers. Find the least possible value that can be taken by the minimum of these two squares.

1.  132

2.  372

3.  4812

4.  (481.13)2

5.  (481.37)2

View Answer  
5
Correct Answer :

4812


Explanation :
No Explanation available for this question

Given that p, q are prime numbers such that p2+q = 37q2+p. find p−q

1.  3

2.  4

3.  16

4.  36

5.  50

View Answer  
5
Correct Answer :

36


Explanation :
No Explanation available for this question

Find the number of positive integers that are divisors of at least one of 1010, 157, 1811

1.  434

2.  435

3.  436

4.  462

5.  461

View Answer  
5
Correct Answer :

435


Explanation :
No Explanation available for this question

N is a natural number . How many values of N exist, such that N2 + 24N + 21 has exactly three factors

1.  0

2.  1

3.  2

4.  3

5.  none of these

View Answer  
5
Correct Answer :

0


Explanation :
No Explanation available for this question

Determine the number of three digits number N divisibly by 11, and N/11 is equal to the sum of squares of the digits of N

1.  0

2.  1

3.  2

4.  3

5.  4

View Answer  
5
Correct Answer :

1


Explanation :
No Explanation available for this question
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