A wall 8m ling, 6 m high and 22.5 cm thick is made up bricks, each measuring 25 cm × 11.25 cm×6 cm. The number of bricks required was
If logn2=a and logn5=b, then logn50=
If isosceles △DEF has sides of length 11.5 and 13.7 m which of the following cound be the perimeter of the trigangle?
The base of a triangle is twice its height, which is 5cm . What is the area , in square centimeters, of the triangle?
On his way home from shopping. Monika must travel due south for 5 miles and due east for another 12 miles to reach his mouse. If she could travel in a straight line from the would she travel?
Two ships are sailing in the sea on the two sides of a lighthouse . The of elevation of the top of the lighthouse an observed from the two ships are 30 degree and 45 degree respectively . If the lighthouse is 100 m high, the distance between the two ships is-
A car got 33 miles per gallon using gasoline that coast $295 per dollars. Approximatley what was the cost , in dollars, of the gasoline used in driving the car 350 miles?
IF x+y=9 and x-y = 5 the value of 4xy is:
A certain jar contain 60 jellybeans where 22 white, 18 green, 11 yellow, 5 red and 4 purple . If a jellybean is to be chosen at random , what is the probability that the jellybean will be neither red not purple?
Tk. 51 is distributed between sumi and Meem in such a way that Sumi receives Tk. 3 less than twice the amount received by Meem. The amount received by Sumi is-
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
5a2-4a-3-3(a2+a+4)=0. What is the sum of the potable value of a?
Two sides of a triangle are 7 and 16. Which of the following is not the length of the third side?
The compound interest on Tk 200 at 10% in 3 years is approximately -
The ratio of ages of a father and his son was 5:1. What is the age of the son after five years, if the ratio of their ages is 3:1 by this time ?
One half of pole is deep into the soil under water, one-third of it is above the soil under water and two meters of it is above the water level. The total length of the pole in meter is-
At a selling price of Tk.273 a book yields 30% profit. What selling price will yield the profit of 10% ?
What is the volume of a cube that has a total surface area of 54?
The product of two number is 900 and their sum exceeds their difference by 30.The greater of these two number is-
After paying 10% tax on all income over Tk. 3000. Rahima had a net income of Tk. 12000. Rahims income before tax was-