A student finds the average of ten 2 digits numbers. While copying numbers, by m
A student finds the average of ten 2 digits numbers. While copying numbers, by mistake, he writes in number with its digits interchanged. As…
The average marks obtained by 22 candidate in an examination are 45. The average
The average marks obtained by 22 candidate in an examination are 45. The average marks of the first 10 candidates is 55 and those…
Average of first five odd multiples of 3 is –
Average of first five odd multiples of 3 is –
The average weight of 20 students in a class is increased by 0.75 kg when one st
The average weight of 20 students in a class is increased by 0.75 kg when one student of 35 kg replaced by a new…
The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded,
The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is ?
In a pre school, the average weight of 30 girls in a class among 50 students is
In a pre school, the average weight of 30 girls in a class among 50 students is 16 kg and that of the remaining…
The average of a collection of 20 measurements was calculated to tb 56 cm. But l
The average of a collection of 20 measurements was calculated to tb 56 cm. But later it was found that a mistake had occurred…
The mean of 1 2 , 2 2 , 3 2 , 4 2 , 5 2 , 6 2 , 7 2 is –
The mean of 1 2 , 2 2 , 3 2 , 4 2 , 5 2 , 6 2 , 7 2 is…
The average of 20 numbers is 12. The average of the first 12 numbers is 11 and t
The average of 20 numbers is 12. The average of the first 12 numbers is 11 and that of the next 7 numbers is…
Total of Arun’s marks in Sanskrit and Mathematics together are 80 more than hi
Total of Arun’s marks in Sanskrit and Mathematics together are 80 more than his marks in Science. His average marks in the three subjects…
The average of seven numbers is 18. If one of the numbers is 17 and if it is rep
The average of seven numbers is 18. If one of the numbers is 17 and if it is replaced by 31, then the average…
If a, b, c, d, e are five consecutive odd numbers, their average is
If a, b, c, d, e are five consecutive odd numbers, their average is