২৬০২১
The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percentage increase of the population per year is----
উত্তর
5%
২৬০২৩
A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
উত্তর
35 hours
২৬০২৪
The sum of ages of 5 children born at intervals of 3 years each is 50 years. What is the age of the youngest child?
উত্তর
4 years
২৬০২৬
Six bells commence tolling together and toll at intervals of 2,4,6,8,10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
উত্তর
15
২৬০২৯
If one-third of one -fourth of a number is 15, then three-tenth of that number is--
উত্তর
54
২৬০৩০
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
উত্তর
150 meter