a, b, c, d, e, f are five consecutive odd numbers, their average is-
A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 3 classes were half full. 5 classes were 3/4 full and 2 classes were 1/6 empty. A total of 74 students were absent. What is the total number of students in this school?
In a shop, the cost of 5 shirts, 5 pairs of trousers and 3 hats is Tk. 710. The cost of 11 shirts, 11 pairs of trousers and 8 hats is Tk. 1590. What is the total cost of 1 shirt, 1 pair of trousers and 1 hat?
The total age of A, B and C is 90 years. Ten years ago the ratio of their ages was 1 : 2 : 3. What is the present age of B?
Kamal went to a shop and bought things worth Tk 25, out of which 30 paisa went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
The salaries of A, B, and C, are in the ratio of 1 : 2 : 3. The salaries of B and C together is Tk. 6,000. By what percentage is the salary of C more than that of A?
On dividing a number by 5. we get 3 as remainder. What will the remainder when the square of this number is divided by 5?
Rohit is 28th from left end of a row of 50 students and shyam is 28th from right end of the row. How many students are sitting between them?
A water filter can be filled with 8 jugs of capacity 1.3 liters each. How many jugs are required to fill the same filter, if capacity of the jug is 0.8 liters?
A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. What is the number?
1/4 of Ram's money is equal to 1/6 of Shyam's money. If both together have Tk. 600 the difference between their amounts is-
50
১২০
২৪০
৩৬০
None of these
In a garden, there are 10 rows and 12 columns of mango trees. The distance between two trees is 2 meters and a distance of one meter left from all sides of the boundary of the garden. What is the length of the garden?
In a certain country. A person is born every 7 seconds and a person dies every 10 seconds. Therefore, the birth and death rates account for a population growth rate of one person every---
4.5seconds
6 seconds
15.17 seconds
20 seconds
A time-study specialist has set the production rate for each worker on a certain job at 22 units every 3 hours. At this rate what is the minimum number of workers that should be put on the job if at least 90 units are to be produced per hour?
Each boy contributed money equal to the number of girls and each girl contributed money equal to the number of boys in a class of 60 students. If the total contribution thus collected is Tk. 1,600, how many boys are there in the class?
The number of students in each section of a school is 24, After admitting new students, three new sections were started. Now, the total number of sections is 16 and there are 21 students in each section. The number of new students admitted is-
4×7-8÷4=26
If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance traveled by him is-
If a carton containing a dozen mirrors is dropped. which of the following cannot be the ratio of broken mirrors to unbroken mirrors?
Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. What is the ratio of A and B?