41). Find the average of the following set of scores 253, 124, 255, 534, 836, 375, 101, 443, 760
A). 427 
B). 413 
C). 141 
D). 409 

42). What will be the average of even numbers between 11 and 63?
A). 37.5 
B). 47 
C). 42 
D). 37 

43). Find average of all prime numbers between 60 and 80?
A). 72 
B). 70.2 
C). 74 
D). 73.6 

44). Calculate the average of the cubes of first five natural numbers?
A). 55 
B). 65 
C). 45 
D). 35 

45). The average of 8 numbers is 14. The average of 6 of these numbers is 16. What is the average of the remaining two numbers?
A). 12 
B). 6 
C). 8 
D). 10 

46). If the algebraic sum of deviations of 20 observations measured from 23 is 70, mean of these observations would be
A). 24 
B). 25 
C). 26 
D). None of the above 

47). Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight numbers is
A). 36 
B). 48 
C). 54 
D). 64 

48). The average of 4 consecutive even numbers is 27. What is the greatest number?
A). 28 
B). 26 
C). 32 
D). 30 

49). The average age of 30 girls is 13 yr. The average of first 18 girls is 15 yr. Find out the average age of remaining 12 girls.
A). 12 yr 
B). 10 yr 
C). 16 yr 
D). 10.5 yr 

50). The average of 50 numbers is 38. If the two numbers 45 and 55 are not considered, what will be the average of remaining numbers?
A). 36.5 
B). 37 
C). 37.5 
D). 37.52 
