Bank Math

What is the probability that an integer selected at random from those between 10 and 100 inclusive is a multiple of 5 or 9?

7 is 5% of what number?

3 liters of water is added to 11 liters of a solution containing 42% of alcohol in the water. The percentage of alcohol in the new mixture is -

Arib's Toyota Cross averages 25 km/liter inside city and 40 km/liter on highway. Yesterday, he drove to his Gulshan office from the factory which is 105 km away. If the Google Maps showed that he drove 25 km of this distance inside Dhaka, what was his average mileage?

You bought 11 pencils and erasers worth BDT. 80. If erasers cost half that of a pencil and you bought one extra eraser, how much is the eraser worth?

If x and y are consecutive positive integers, which of the following must be an even integer?

P, Q, R are employed to do a work for Tk. 5,750. P and Q together finished 19/23 of work and Q and R together finished 8/23 of work. Wage of Q, in Taka, is -

Peter purchased a machine for TK. 80,000 and spent TK. 5,000 on repair and TK. 1,000 on transport and sold it with 25% profit. At what price did he sell the machine?

If a + 1, 2a + 1, 4a - 1 are in Arithmetic Progression, then the value of ‘a’ is -

Increasing the original price of an item by 10%, then decreasing by 20% and then again increasing the price by 10% is equivalent:

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is -

A man takes 3 hours 45 minutes to row a boat 22.5 km downstream of a river and 2 hours 30 minutes to cover a distance of 10 km up stream. Find the speed of the river current in km/hr.

The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?

The ratio of two numbers is 7:4. If 8 is added to both the numbers ratio becomes 13:8. What is the smaller number?

Today is Friday. After 61 days, it will be:

Two men, A and B, run a 4 km race on a circular course of 1/4 km. If their speeds are in the ratio of 5:4. How often does the winner pass the other?

A picture is copied onto a sheet of paper 8.5 inches by 10 inches. A 1.5 inch margin is left all around. What area in square inches does the picture cover?

3.003/2.002 = ?

1 বিলিয়ন = কত কোটি?

A square carpet with an area of 169 cm² must have 2 cm cut off one of its edges in order to be a perfect fit for a rectangular room. What is the area (in cm) of this rectangular room?