Find the average of the first 40 natural numbers.
21
20.5
21.5
None Of These
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1
Discuss

A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is :
Solution 
2
Discuss

19 people went to a hotel for combine dinner party 13 of them spent Rs. 79 each on their dinner and rest spent 4 more than the average expenditure of all the 19. What was the total money spent by them.
Solution 
3
Discuss

The average weight of 3 men, A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E whose weight is 3 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 kg. What is the weight of A ?
Solution 
4
Discuss

Four years ago, the average age of A and B was 18 years. At present the average age of A, B, and C is 24 years. What would be the age of C after 8 years?
Solution 
5
Discuss

The average of X1, X2 and X3 is 14. Twice the sum of X2 and X3 is 30. What is the value of X1?
Solution 
6
Discuss

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what is the price of each of these two books?
Solution 
7
Discuss

The average of the largest and smallest 3 digits numbers formed by 0, 2 and 4 would be :
Solution 
8
Discuss

The average age of group of 20 girls is 15 years and that of another group of 25 boys it is 24 years. The average age of the two groups mixed together is :
Solution 
9
Discuss

The average of the first 100 positive integers is
Solution 
10
Discuss

The average age of the mother and her six children is 12 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother ?
Solution 
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