Find the average of all the numbers between 6 and 34 which are divisible by 5 -

The total marks obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained…

The mean of 9 observation is 16. One more observation is included and the new mean becomes 17. The 10<sup>th</s…

A library has an average number of 510 visitors on sunday and 240 on other days. The average number of visitors per day …

A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the a…

The average of 11 players of a cricket team is decreased by 2 months when two of them aged 17 years and 20 years are rep…

Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of t…

The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases …