Let b be a positive integer and a = b2 – b. If b ≥ 4, then a2 – 2ais divisible by

1.  15

2.  20

3.  24

4.  None of these

View Answer  
4
Correct Answer :

24


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

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

m and n are natural numbers such that 1 ≤ m < n and 1978m and 1978n have the same last three digits. Find (m+n) such that m+n is least.

1.  5

2.  6

3.  7

4.  8

5.  none of these

View Answer  
5
Correct Answer :

none of these


Explanation :
No Explanation available for this question

In a test of 12 questions, a candidate gets 1 mark for every right answer, 0 for unansweredquestions, and a negative 0.25 for every wrong answer. What are the total number of ways inwhich a particular candidate may score a positive integral value of net score

1.  13

2.  17

3.  21

4.  23

View Answer  
4
Correct Answer :

21


Explanation :
No Explanation available for this question

In a wholesale shop, 3 tonnes of rice and 2 tonnes of wheat cost Rs. 800, one tonne of wheat andtwo and a half tonnes of barley cost Rs. 850 and 3 tonnes of maize and half tonne of barley costRs. 3150. If I plan to buy 5 tonnes each of the 4 grains, what is my total outflow

1.  8000

2.  9000

3.  9160

4.  Indeterminate

View Answer  
4
Correct Answer :

8000


Explanation :
No Explanation available for this question

On meeting Tony, if Appu and Tony walk towards the spot where Roxy is waiting, how manyminutes have elapsed between Roxy leaving the duo and then meeting them again

1.  20

2.  25

3.  23

4.  30

View Answer  
4
Correct Answer :

25


Explanation :
No Explanation available for this question
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