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Aptitude > Math > Average

1 The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers ?
 
17.3
26.5
33.6
44.6
 
Answer: Option4
2 The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team ?
 
123 years
225 years
320 years
422 years
 
Answer: Option1
3 Amithab's average expenditure for the January to June is Rs. 4200 and he spends Rs.1200 in January and Rs.1500 in july.The average expenditure for the months of febraury to July is:
 
1Rs. 4250
2Rs. 4520
3 Rs. 4060
4None of these
 
Answer: Option1
4 The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is
 
120
250
340
460
 
Answer: Option3
5 A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half. The number of pupils in the class is :
 
140
245
330
438
 
Answer: Option1
6 The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is :
 
1 47 kg
2 46 kg
345 kg
448 kg
 
Answer: Option3
7 The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :
 
115
220
323
424
 
Answer: Option2
8 123 typists typeed 984 papers in 1/15 hour. The number of papers typed for minute by a average typist is:
 
15
21
34
42
 
Answer: Option4
9 The average of the two-digit numbers, which remain the same when the dibits inter-change their positions, is :
 
1 53
254
355
456
 
Answer: Option3
10 The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
 
1 1
2-1
30
4none of these
 
Answer: Option3
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