We write down all the digits from 1-9 side by side. Now we
put '+' between as many digits as we wish to, so that the
sum of numbers become 666. It is explained below
1 2 3 4 5 6 7 8 9 = 666
Now suppose we put plus signs at following places.
12 + 345 + 67 + 89 = 513
Since there are four numbers, so the average can be
calculated by dividing the sum by 4. What is the average if
the sum is 666?
We write down all the digits from 1-9 side by side. Now we
put '+' between as many digits as we wish to, so that the
sum of numbers become 666. It is explained below
1 2 3 4 5 6 7 8 9 = 666
Now suppose we put plus signs at following places.
12 + 345 + 67 + 89 = 513
Since there are four numbers, so the average can be
calculated by dividing the sum by 4. What is the average if
the sum is 666?
The average monthly salary of employees, consisting of officers and workers, of an organisation is Rs 3000. The average salary of an officer is Rs 10,000 while that of a worker is Rs 2000 per month. If there are total 400 employees in the organisation, find the number of officers.
The average monthly salary of employees, consisting of officers and workers, of an organisation is Rs 3000. The average salary of an officer is Rs 10,000 while that of a worker is Rs 2000 per month. If there are total 400 employees in the organisation, find the number of officers.
18. Of the three numbers, the first is twice the second and the
second is twice the third. The average of the reciprocal of
the numbers is
7/72 . The numbers are
18. Of the three numbers, the first is twice the second and the
second is twice the third. The average of the reciprocal of
the numbers is
7/72 . The numbers are
-
-
-
-
In a bag, there are 150 coins of Rs 1,50 p and 25 p denominations. If the total value of coins is Rs 150, then find how many rupees can be constituted by 50 coins.
In a bag, there are 150 coins of Rs 1,50 p and 25 p denominations. If the total value of coins is Rs 150, then find how many rupees can be constituted by 50 coins.
The average age of a group of persons going for picnic is
16 years. Twenty new persons with an average age of 15
years join the group on the spot due to which their average
age becomes 15.5 years. The number of persons initially
going for picnic is
The average age of a group of persons going for picnic is
16 years. Twenty new persons with an average age of 15
years join the group on the spot due to which their average
age becomes 15.5 years. The number of persons initially
going for picnic is
The average weight of 47 balls is 4 gm. If the weight of
the bag (in which the balls are kept) be included, the
calculated average weight per ball increases by 0.3 gm.
What is the weight of the bag?
The average weight of 47 balls is 4 gm. If the weight of
the bag (in which the balls are kept) be included, the
calculated average weight per ball increases by 0.3 gm.
What is the weight of the bag?
On an average 300 people watch the movie in Sahu cinema
hall on Monday, Tuesday and Wednesday and the average
number of visitors on Thursday and Friday is 250. If the
average number of visitors per day in the week be 400, then
the average number of people who watch the movie in
weekends (i.e., on Saturday and Sunday) is
On an average 300 people watch the movie in Sahu cinema
hall on Monday, Tuesday and Wednesday and the average
number of visitors on Thursday and Friday is 250. If the
average number of visitors per day in the week be 400, then
the average number of people who watch the movie in
weekends (i.e., on Saturday and Sunday) is
A train travels with a speed of 20 m/s in the first 10 minutes,
goes 8.5 km in the next 10 minutes, 11 km in the next 10,8.5
km in the next 10 and 6 km in the next 10 minutes. What is
the average speed of the train in kilometer per hour for the
journey described?
A train travels with a speed of 20 m/s in the first 10 minutes,
goes 8.5 km in the next 10 minutes, 11 km in the next 10,8.5
km in the next 10 and 6 km in the next 10 minutes. What is
the average speed of the train in kilometer per hour for the
journey described?
Find the average increase rate if increase in the population
in the first year is 30% and that in the second year is 40%.
Find the average increase rate if increase in the population
in the first year is 30% and that in the second year is 40%.
Find the average weight of four containers, if it is known
that the weight of the first container is 100 kg and the total
of the second, third and fourth containers' weight is defined
by f (x) = x^2 – 3/4 (x^2) where x = 100
Find the average weight of four containers, if it is known
that the weight of the first container is 100 kg and the total
of the second, third and fourth containers' weight is defined
by f (x) = x^2 – 3/4 (x^2) where x = 100
The average age of a group of 14 persons is 27 years and
9 months. Two persons, each 42 years old, left the group.
What will be the average age of the remaining persons in
the group?
The average age of a group of 14 persons is 27 years and
9 months. Two persons, each 42 years old, left the group.
What will be the average age of the remaining persons in
the group?
. A school has only four classes that contain 10,20,30 and 40
students respectively. The pass percentage of these classes
are 20%, 30%, 60% and 100% respectively. Find the pass
% of the entire school.
. A school has only four classes that contain 10,20,30 and 40
students respectively. The pass percentage of these classes
are 20%, 30%, 60% and 100% respectively. Find the pass
% of the entire school.
A man's average expenditure for the first 4 months of the
year was Rs 251.25. For the next 5 months the average
monthly expenditure was Rs 26.27 more than what it was
during the first 4 months. If the person spent Rs 760 in all
during the remaining 3 months of the year, find what
percentage of his annual income of Rs 3000 he saved in the
year.
A man's average expenditure for the first 4 months of the
year was Rs 251.25. For the next 5 months the average
monthly expenditure was Rs 26.27 more than what it was
during the first 4 months. If the person spent Rs 760 in all
during the remaining 3 months of the year, find what
percentage of his annual income of Rs 3000 he saved in the
year.
A curious student of Statistics calculated the average height
of all the students of his class as A. He also calculated the
average of the average heights of all the possible pairs of
students (two students taken at a time) as B. Further, he
calculated the average of the average heights of all the
possible triplets of students (three students taken at a time)
as C. Which of the following is true of the relationship
among A, B and C?
A curious student of Statistics calculated the average height
of all the students of his class as A. He also calculated the
average of the average heights of all the possible pairs of
students (two students taken at a time) as B. Further, he
calculated the average of the average heights of all the
possible triplets of students (three students taken at a time)
as C. Which of the following is true of the relationship
among A, B and C?
The average salary of all the workers in a workshop is Rs 8,000. The average salary of 7 technicians is Rs 12,000 and
the average salary of the rest is Rs6,000. The total number
of workers in the workshop is :
The average salary of all the workers in a workshop is Rs 8,000. The average salary of 7 technicians is Rs 12,000 and
the average salary of the rest is Rs6,000. The total number
of workers in the workshop is :