Average Questions

If a+1a=2 then the vealue of a5+1a5 will be

An engineering student has to secure 25% marks to pass. He gets 45 and fails by 45 marks. Find the maximum marks.

The average of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

The median of the numbers 14, 12, 12, 16, 13 and 18 is

The value of (2+32-3-342) is

What is the average of all numbers between 8 and 74 which are divisible by 7?

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

Average of the marks of 132 students of a college is 40. If the average of the marks of the passed students is 42 and the average of the marks of the failed students is 20, then what will be the respective ratio of the total marks of passed students and the total marks of failed students?