In an examination, a pupil’s average mark was 63 per paper. If he had obtained
In an examination, a pupil’s average mark was 63 per paper. If he had obtained 20 more marks for his Geography paper and 2…
The mean of the first ten even natural number is-
The mean of the first ten even natural number is-
In a one-day cricket match the captain of one of the teams scored 30 runs more t
In a one-day cricket match the captain of one of the teams scored 30 runs more than the average runs scored by the remaining…
The average of the first nine prime numbers is-
The average of the first nine prime numbers is-
16 children are to be divided into two groups A and B of 10 and 6 children. The
16 children are to be divided into two groups A and B of 10 and 6 children. The average percent marks obtained by the…
The arithmetic mean of first 11 natural numbers is
The arithmetic mean of first 11 natural numbers is
The average age of 30 students in a class is 15 years. If 6 students of this cla
The average age of 30 students in a class is 15 years. If 6 students of this class have the average age of 16…
The total marks obtained by a student in Physics, Chemistry and Mathematics toge
The total marks obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained by him in Chemistry….
Of the four numbers, the first is twice the second, the second is one-third of t
Of the four numbers, the first is twice the second, the second is one-third of the third and the third is 5 times the…
A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15,
A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and…
A car owner buys petrol at Rs. 17, Rs. 19 and Rs. 20 per litre for three consecu
A car owner buys petrol at Rs. 17, Rs. 19 and Rs. 20 per litre for three consecutive years. Compute the average cost per…
If the mean of a, b, c, is M and ab + bc + ca = 0, then the mean of a 2 , b 2 ,
If the mean of a, b, c, is M and ab + bc + ca = 0, then the mean of a 2 ,…