The reciprocal of single digit number gives a number, which is 0.AAAA... where A is 0–9. This number (0.AAAA...) when multiplied by which of the following integers would definitely yield a whole number

1.  428

2.  910

3.  819

4.  None of these

View Answer  
4
Correct Answer :

819


Explanation :
No Explanation available for this question

If r 5= 7 and 2q 4 = 12, what is the minimum possible value of qr

1.  -48

2.  -16

3.  8

4.  16

View Answer  
4
Correct Answer :

-48


Explanation :
No Explanation available for this question

If n = x + 1, where x is the product of four consecutive positive integers, then which of the following is are true A. n is odd B. n is prime C. n is a perfect square

1.  A and C only

2.  A and B only

3.  A only

4.  None of these

View Answer  
4
Correct Answer :

A and C only


Explanation :
No Explanation available for this question

A circle is inscribed and circumscribed within an equilateral triangle. Calculate the ratio of the areas of the incircle and circumcircle

1.  22 : 7

2.  2 : 1

3.  1 : 4

4.  1 : 2

View Answer  
4
Correct Answer :

1 : 4


Explanation :
No Explanation available for this question

Consider a sequence of five consecutive integers. The average of the first 3 integers is n – 1. The average of the last three five integers is

1.  n

2.  n + 1

3.   k × n, where k is a function of n

4.  n + 2

View Answer  
4
Correct Answer :

n + 1


Explanation :
No Explanation available for this question

If a, b and c are the sides of a triangle and a4 + b4 + 2a2b2 = c4, then the triangle is

1.  right-angled triangle

2.  acute-angled triangle

3.  equilateral triangle

4.  obtuse-angled triangle

View Answer  
4
Correct Answer :

right-angled triangle


Explanation :
No Explanation available for this question

X is picked up by his father by car from school everyday and they reach home at 5.00 p.m. One day, since school got over an hour earlier than usual, he started walking towards home at 3 km/hr. He met his father on the way and they reached home 15 minutes earlier than their usual time. What is the speed of the car

1.  15 km/hr

2.  20 km/hr

3.  21 km/hr

4.  16 km/hr

View Answer  
4
Correct Answer :

21 km/hr


Explanation :
No Explanation available for this question

The expenses of a boarding house are partly fixed and partly variable with the number of boarders. The expenses are Rs 90 per head when there are 25 boarders and Rs 75 per head, when there are 50 boarders. Find the expense per head when there are 100 boarders

1.  Rs 50

2.  Rs 65

3.   Rs 6

4.  None of these

View Answer  
4
Correct Answer :

Rs 6


Explanation :
No Explanation available for this question

The third term of a G.P. is 3, then what is the product of the first five terms

1.  243

2.  234

3.  342

4.  Insufficient data

View Answer  
4
Correct Answer :

243


Explanation :
No Explanation available for this question

There are 8 different locks with exactly one key for each lock. All the keys have been mixed up. What is the maximum number of trials required in order to determine which key belongs to which lock

1.  7!

2.  28

3.  8!

4.  36

View Answer  
4
Correct Answer :

8!


Explanation :
No Explanation available for this question
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