Bank Math

If the radius of a circle is 6 cm and a circular segment subtends an angle 30° at the center, then the length of the arc is -

How many years will it take for an investment of Tk.5000 to earn Tk. 1200 in simple interest rate of 6%?

If X occupies the last chair and A occupies the 2nd chair, who must occupy chair no 1?

What is the value of a, if 3x² + ax + a + 3 divisible by x + 2?

The difference between two numbers is 5 and the difference between their square is 65. What is the smaller number?

Modric puts Tk. 100 in the bank for two years at 10% interest compounded annually. At the end of the two years, what will be his balance?

The sum of two numbers is 184. If one-third of the one exceeds one-seventh of the other by 8, find the smaller number.

If x + 1/x = 3 then x − 1/x =?

The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is -

If radius of a circle is increased by 30% then its area is increased by

What is the probability of getting a sum of six if two dice are thrown at once?

A wheel rotates 10 times per minute and moves 20 feet during each rotation, How many feet does the wheel move in 1 hour.

A man lends Tk. 10000 in four parts. If he gets 8% on TK. 2000, 7.5% on TK. 4000 and 8.5% on TK. 1400, what percent must he get for the remainder, if the average interest is 8.13%?

The compound interest on Tk 30,000 at 7% per annum is TK.4357. The period (in years) is:

Bob invested in a stock that increased in value by 17% to 25.74. What was the actual increase in the stock’s value?

The roots of the equation 9x² - bx + 81 = 0 will be equal, if the value of b is

A, B and C enter into a partnership with a certain capital in which A's contribus10,000. If out of a total profit of Tk. 1000, A gets Tk. 500, B gets Tk. 300 then C's capital is

A student is ranked 13th from right and 8th left. How many students are there in total?

After purchasing a square sheet of plywood of area 169 square feet, I found that I must cut off 2 feet from one side, to fit a wall. What is the area, in square feet, of the wall?

A cylindrical rod of iron, whose height is equal to its radius, is melted and east into spherical balls whose radius is half the radius of the rod. Find the number of balls.