Question
A stadium has 10 gates. In how many different ways can
3 persons enter the stadium?Solution
There are 10 gates Total persons = 3 Each person can choose any gate out of 10. Total ways are 10*10*10 = 1000
The average of 25 numbers is 39.4. The average of the first 12 numbers is 36.5, and the average of the last 12 numbers is 40.5. Determine the value of t...
- The first six days of a week had an average rainfall of 90 cm, while the last six days recorded an average of 98 cm. If the weekly average rainfall was 95 ...
- The average of four numbers is 58. When four more numbers are included, the average increases by 4. Find the average of the numbers included.
In an election between two candidates, the winner secured a victory margin of 720 votes. If 20% of the total votes polled were de...
Daksh bought 21 notebooks for Rs.1260 from shop A and 14 notebooks for Rs.1190 from shop B. What is the average price he paid per book?
A park has an average of 140 visitors on Sundays and 80 on other day. The average number of visitors in a month of 30 days starting with Sunday is
Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
The average weight of 36 students in a class is 62 kg. When two new students having weights (m + 8) kg and (m − 6) kg joined, the average weight dropp...
- The average score of a batsman in a number of innings is 40. He scores 88 in the next inning, raising his average by 1.6. Find the total runs scored before...
The average of four numbers is 68. When four more numbers are included, the average increases by 6. Find the average of the numbers included.
Relevant for Exams:
