Let N be the smallest natural number with the following properties: a)Its decimal representation has 6 as the last digit b)If the last digit of N is erased and placed at the leftmost place the new number becomes 4 times the original if k is the number of digits in N. Find k

1.  3

2.  4

3.  5

4.  6

5.  none of these

View Answer  
5
Correct Answer :

6


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

ABCD is a parallelogram. X is a point on AC such that BX is perpendicular to AC. Which of thefollowing options contains valid magnitude combinations of AC (in c.m.), BX (in c.m.) and areaof the parallelogram ABCD (in c.m.2) respectively

1.  10, 4, 20

2.  10, 4, 40

3.  10, 2, 80

4.  10, 2, 40

View Answer  
4
Correct Answer :

10, 4, 40


Explanation :
No Explanation available for this question

A cube is divided into 8 equal cubes. Each of these cubes is further sub-divided into 8 equalcubes. What is the ratio of the surface area of the smallest cube as a percentage of the originalcube

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the following figure, if length of minor arc AB is, and  ACB =60° then what is the areaof the polygon ACBP    

1.  16√3

2.  

3.  8√3

4.  Indeterminate

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

Two teams participating in a competition had to take a test in a given time. Team B chose a testwith 300 questions, and team A the test with 10% less questions. Team A completed the test 3hours before schedule while team B completed it 6 hours before schedule. If team B answered 7questions more than team A per hour, how many questions did team A answer per hour

1.  15

2.  18

3.  21

4.  24

View Answer  
4
Correct Answer :

18


Explanation :
No Explanation available for this question

Mr.Ghosh wants to fence his square shaped field with each side measuring 120 ft. If the postshave to put at a distance of 12 ft each, how many posts are required

1.  38

2.  39

3.  40

4.  36

View Answer  
4
Correct Answer :

40


Explanation :
No Explanation available for this question

Two successive discounts of x per cent and y per cent are given. When is the net discount highestgiven x + y = k (k = constant)

1.  k > x > y

2.  x < y < k

3.  x = y

4.  x = k, y = 0 or y = k, x = 0

View Answer  
4
Correct Answer :

x = k, y = 0 or y = k, x = 0


Explanation :
No Explanation available for this question

Surekha works for a book marketing company and gets a stipend of Rs.3800. She also getscommission on books sold at the rate of Rs.8 per copy for first 25 copies, Rs.10 per copy for thenext 25 copies, Rs.12 per copy for the next 50, and for every copy sold thereafter, she gets Rs.15per copy. If in a month she makes Rs.4430, how many books did she sell

1.  58

2.  60

3.  65

4.  None of these

View Answer  
4
Correct Answer :

65


Explanation :
No Explanation available for this question

If a and b are positive real numbers such that a + b = 1, then what is the minimum value of  + 

1.  8

2.  16

3.  24

4.  4

View Answer  
4
Correct Answer :

8


Explanation :
No Explanation available for this question
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