১১৩২১
What is the minimum number of tiles of size 16 by 24 required to from a square by placing the tiles adjacent to one another other?
উত্তর
16
১১৩২৬
X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If the work was completed in 16 days, Y alone can finish that work in:
উত্তর
36 days
১১৩২৭
A can contains a mixture of two liquids A and B in the ratio 7 : 5. When 9 liters of mixtures are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many liters of liquid A was contained by the can initially?
উত্তর
25
১১৩২৮
If simple interest on Tk. 600 for 4 years and on Tk. 600 for 2 years combined is Tk. 180. Find the rate of interest.
উত্তর
5%
১১৩২৯
A committee of 5 members is to be formed out of 3 trainees, 4 professors and 6 research associates. In how many different ways can this be done if the committee should have 2 trainee and 2 research associates?
উত্তর
180
১১৩৩০
A bag contains 6 red balls, 11 yellow balls and 5 pink balls. If two balls are drawn at random from the bag one after another, what is the probability that the first ball is red and the second ball is yellow?
উত্তর
1/7