The average of all prime numbers between 32 and 69 is.
The average of five even numbers is 64. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average of five consecutive odd numbers is 77. What is the average of the first three numbers among them?
The average age of a group of eight children is 9 years. Two children, whose ages were 7 years more and 5 years more than the average age, left. Two new...
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)...
The average age of 10 men is increased by 2 years when two of them whose age are 24 and 26 years replaced by two new men. The average age of the two new...
The average age of three children is 21 years. If their ages are in the ratio 3:5:6. Find the age of the youngest child.
The average number of books on Biology, Chemistry, and Physics in a book shop is 300. Biology books are 150 more than the average number of Chemistry an...
In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced...
The average of 18 numbers is 40, and the average of the first 9 numbers is 45. Find the average of the remaining 9 numbers.
