Bank Math

5^-3 + 5^-3 + 5^-3 + 5^-3 + 5^-3=?

By selling 20 oranges for one taka a man losses 4%. How many oranges for one taka should he sell to gain 20%?

A football team consisted of 14 boys . In how many ways the team can be chosen so that the owner of the ball is always in the team?

A shopkeeper marks the price of an article at Tk. 80. What will be the selling price, if he allows two successive discounts of 5% each?

x² - x - 12 = 0 সমীকরণের মূলদ্বয় নিচের কোনটি?

48.95 - 32.006 =?

The present worth of Tk.169 due in 2 years at 4% per annum compound interest is:

Anik travels 35 kilometers (km) partly at 4km /h and partly at 5 km/h. If he covers the distance at 5 km/h he could cover 2 km more in the same time. The time taken to cover the whole distance at original rate is-

If f(x) = x/(x - 2) then value of f^{- 1}(2)?

A dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of the dog is equal to 4 leaps of the hare. Compare their speeds:

If 3 men or 4 women can construct a wall in 44 days, then the number of days that 8 men and 4 women take to construct it is____?

What is the slope of the line perpendicular to the line y = - 5x + 9?

2√3 + √3 =

90 is 75 percent of which number given below? 

On dividing a number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5?

A merchant has 1000 kg of sugar, part of which he sells at 8% and the remaining at 18% profit. He gains 14% on the whole. Find the quantity of sugar that he sold at 18% profit.

A man is need of money for 90 days he asked to Bank. The Bank charged taka 156 at 8%. What was the amount asked for?

Palash drives form City A to B at 40km per hour and returns over the same road at 30km per hour and spends 8 hours away from home including a one-hour stop for lunch. What is the distance (in km) between City A and City B?

The average of eight numbers is 14. The average of six of these numbers is 16. The average of the remaining two numbers is –

Mr. A has won an election by a vote of 250 to 150. What part of the total vote was against him?