A sum of money amounts to Tk. 9800 after 5 years and Tk. 12005 after 8 years at the same rate of simple interest per annual is :

At what rate of compound interest rate per annual will a sum of Tk. 1200 become Tk. 1348.32 in 2 years?

The area of a rectangle is 460 square meters. If the length is 15% more than the breadth, what is the breadth...

In a 500m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has s start of 140 m. Then, A w...

The angle between the minute hand and the hour hand of a clock when the times 4.20?

The market value of a 10.5% stock, in which an income of Tk. 756 is dervided by investing Tk.900, brokerage be...

In how many ways can the letters of the word 'LEADER' be arranged?