Bank Math

In a room, there are six Bengali, twelve engineers and fifteen football players. Only one of them was a bengali Engineer who played Football. Two were Bengali Engineers but did not play football and two were Bengali football players and were not engineers. If there were 24 people in the room, and at least one of them were Bengali, engineer or a football player, how many were engineers and played football but not Bengali?

Two numbers are in ratio of 21 : 26. If 8 is added in each, the new numbers are in ratio of 5 : 6. Find the ratio of numbers, if 6 subtracted from each number? 

A train, 150 meter long and running at a speed of 60 km per hour, takes 30 seconds to cross a bridge. What is the length (in meter) of the bridge?

30% of 50 is what fraction of 75% of 80?

Which number replaces the question mark?

A man borrowed some money for 120 days. He asked the banker for the money and the banker charged Tk. 360 as interest @6% per annum. What was the amount he borrowed?

√(.01+√0.0064)=?

How many permutations of seven different letters may be made?

Sum of three consecutive multiples of 3 is 396. Find the largest number.

Which of the following equations is not equivalent to 25x² = y² - 4.

The difference in Taka between simple and compound interest at 5% annually on a sum of Tk. 5,000 after 2 years is

By selling a product for 3500, a seller makes 15% profit. If the profit is decreased to 9%, then selling price will be:

In every 30 minutes the time of a watch increases by 3 minutes. After showing the correct time at 5 a.m. What time will the watch show after 6 hours?

A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and p. He found the mean to be 12. What should be the number in place of p?

a, b and c are all positive integers such that a + b + c = 150 and none of these values are equal to each other. What is the smallest possible value for the median of a, b and c?

A committee has 5 men and 6 women. What is the number of ways of selecting a group of eight persons?

Mr. A is 5 years senior to Mr. B, Mr. B is 3 years senior to Mr. C, Mr. C is 2 year junior to Mr. D in job experience. If Mr. D has 15 years job experience than how many years of experience possessing Mr. A?

(0.8)^{- 5}/(.4)^{- 4} = ?

If a = 4b, what percentage of 2a is 2b?

Find the area of a rhombus whose side is 25cm and one of the diagonals is 30cm?