A team of 8 persons joins in a shooting competition. The best marksman scored 85
A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average…
The mean of 100 observations was calculated as 40. It was founder later on that
The mean of 100 observations was calculated as 40. It was founder later on that one of the observation was misread as 83 instead…
What is the average of the first six (positive) odd number each of which is divi
What is the average of the first six (positive) odd number each of which is divisible by 7?
The average age of four brothers is 12 years. If the age of their mother is also
The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5…
A cricketer had a certain average of runs for his 64 innings. In his 65th inning
A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on…
Mean of 10 numbers is 30. Later on it was observed that numbers 15, 23 are wrong
Mean of 10 numbers is 30. Later on it was observed that numbers 15, 23 are wrongly taken as 51, 32. The correct mean…
There are 30 students in a class. The average age of first 10 students is 12.5 y
There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 20…
The average age of a family of 10 members is 20 years. If the age of the younges
The average age of a family of 10 members is 20 years. If the age of the youngest member of the family is 10…
The average of marks in Mathematics for 5 students was found to do 50. Later, it
The average of marks in Mathematics for 5 students was found to do 50. Later, it was discovered that in the case of one…
a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive
a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all…
The average marks obtained by a class of 60 students is 65. The average marks of
The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be…
Out of four numbers the average of the first three is 16 and that of the last th
Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number…