# In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there

1.  159

2.  209

3.  201

4.  212

4

209

Explanation :
No Explanation available for this question

# A certain number of persons can finish a piece of work in 100 days. If there were 10 persons less, it would take 10 more days finish the work. How many persons were there originally

1.  90

2.  100

3.  110

4.  120

4

110

Explanation :
No Explanation available for this question

# The average of 20 numbers is zero. Of them, How many of them may be greater than zero , at the most

1.  1

2.  20

3.  0

4.  19

4

19

Explanation :
No Explanation available for this question

# 9 examiners can examine a certain number of answer books in 12 days by working 5 hours a day. How many hours in a day should 4 examiners work to examine twice the number of answer books in 30 days

1.  9

2.  10

3.  11

4.  12

4

9

Explanation :
No Explanation available for this question

# The average monthly income of A and B is Rs. 5050. The average monthly income of B and C is Rs. 6250 and the average monthly income of A and C is Rs. 5200. What is the monthly income of A

1.  2000

2.  3000

3.  4000

4.  5000

4

4000

Explanation :
No Explanation available for this question

# 9 engines consume 24 metric tonnes of coal, when each is working 8 hours day. How much coal is required for 8 engines, each running 13 hours a day, if 3 engines of former type consume as much as 4 engines of latter type

1.  20 metric tonnes

2.  22 metric tonnes

3.  24 metric tonnes

4.  26 metric tonnes

4

26 metric tonnes

Explanation :
No Explanation available for this question

# A car owner buys diesel at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of diesel if he spends Rs. 4000 each year

1.  Rs. 8

2.  Rs. 7.98

3.  Rs. 6.2

4.  Rs. 8.1

4

Rs. 7.98

Explanation :
No Explanation available for this question

# A garrison had provisions for a certain number of days. After 10 days, 1/5 of the men desert and it is found that the provisions will now last just as long as before. How long was that

1.  50 days

2.  30 days

3.  40 days

4.  60 days

4

50 days

Explanation :
No Explanation available for this question

# The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

1.  48.55

2.  42.25

3.  50

4.  51.25

4

48.55

Explanation :
No Explanation available for this question

1.  12 days

2.  16 days

3.  14 days

4.  15 days

4