Bangladesh Bank Assistant Director Written Math Solution 2022
1. Rony takes 6 hours to type 32 pages on a computer, while Jony takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
2. In a room filled with 7 people, 4 people have exactly 1 sibling in the room and 3 people have exactly 2 siblings in the room. If two individuals are selected from the room at random, what is the probability that those two individuals are not siblings?
3. a, b, and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c?
4. In a village of 100 households, 75 have at least one DVD player, 80 have at least one cell phone, and 55 have at least one MP3 player. If x and y are respectively the greatest and lowest possible number of households that have all three of these devices, x-y is?
5. The monthly income and expenditure ratio of A and B are 5:6 and 4:5 respectively. If both of them can have Tk 500 as monthly savings, then what is the income of A?
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