A Best Way To Crack Gorenment Job Exams

Quantitative Aptitude Objective Questions { Average }



8. If the mean of 5 observation x, x+2, x+4, x+6 and x+8 is 11, then the mean of the last three observation is :
A.11
B.13
C.15
D.17

9. The average of th? two-digit numbers, which remain the same when the digits inter-change their positions, is :
A.33
B.44
C.55
D.66

10. The average of first 50 natural numbers is :
A.12.25
B.21.25
C.25
D.25.5

11. The average of all odd numbers upto 100 is :
A.49
B.49.5
C.50
D.51

12. If a, b, c, d, e are five consecutive odd numbers, their average is :
A.5 (a+4)
B.abcde/5
C.5(a+b+c+d+e)
D.None of these

13. The average of a non-zero number and its square is 5 times the number. The number is
A.9
B.17
C.29
D.295

14. The average of 7 consecutive nurnlers is 20. The largest of these nurnbers is :
A.20
B.22
C.23
D.24

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