If simple interest on a certain sum of money is Tk. 256 and the rate of interest per annum equals the number of years, then the rate of interest is :
A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?
Four subjects ---physics, Chemistry, Mathematics and Biology ---were taught in four consecutive periods of one hour each starting from 8.00 a.m. At what time was the chemistry period scheduled? 1. Mathematics period ended at 10.00 a.m, which was preceded by Biology. 2. Physics was scheduled in the last period. 3. Mathematics period was immediately followed by Chemistry.
What was the average time the car with the soft wheels took to cross the 75-foot mark?
Insert the missing number? 4 11 8 19 12 ?
একটি ঘড়িতে ৬টার ঘণ্টাধ্বনি ঠিক ৬টায় শুরু করে বাজতে ৫ সেকেন্ড সময় লাগে। যদি ঘণ্টাধ্বনি সমান ব্যবধানে বাজে তাহলে ঐ ঘড়িতে ১২টার ঘণ্টাধ্বনি বাজতে কত সেকেন্ড সময় লাগবে ?
A school has a total enrollment of 9- students. There are 30 students taking Physics, 25 taking English, and 13 taking both. What percentage of the students are taking either Physics or English?
Three coins are tossed. Find the probability of at least one head and one tail.
The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the following except :
A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by which of the following?
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they gain meet at the starting point altogether?
The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?
There are 87 balls in a jar. Each ball is painted with at least one of two colors, red or green. It is observed that 2/7 of the balls that have red color also have green color, while 3/7 of the balls that have green color also have red color. what fraction of the balls in the jar has both red and green colors?
Arif is now 5 times as old as Babu, but 7 years now he will be 3 times as old as babu. How old is Arif now?
A company hired a plumber and 8 workers to do a certain job. The daily wages for the plumber is 4 times more than that of a worker. If the company paid a total of Tk. x for the work, what was the payment received by the plumber?
Mina has 3 Taka more than Babu has, but 5 Taka less then shelly has. If Mina has x Taka, how much money Shelly and Babu have altogether?
The cost of carpeting a room 18m long with a carpet 75 m wide at Tk. 4.50 per metre is Tk. 810. The breadth of the room is ----
Find the missing term in each of the following series : 2, 5, 9, 19, 37, ?
একজন দোকানদার ৭.৫% ক্ষতিতে একটি দ্রব্য বিক্রয় করলো। যদি দ্রব্যটির ক্রয়মূল্য ১০% কম হতো এবং বিক্রয়মূল্য ৩১ টাকা বেশি হতো, তাহলে তার ২০% লাভ হতো। দ্রব্যটির ক্রমূল্য কত?
একটি সমদ্বিবাহুর ভূমি সংলগ্ন একটি কোণের পরিমাপ ৫৫ডিগ্রি হলে উহার শীর্ষ কোণের পরিমাপ কত হবে?