A pole 6 m high casts a shadow 23 m long on the ground , then the sun's elevation is __
If a +1, 2a +1 , 4a-1 are in Arithmetic Progression then the value of 'a' is :
Suppose today is Friday. What day of the week will it be 65 days from now?
Sunday
Monday
Tuesday
Friday
which of the following angle can be constructed with the help of a ruler and a pair of compasses?
If a, b and c are the lengths of the three sides of a triangle , then which of the following is true?
which line is parallel to y = x -2?
The area of a triangle with sides 3 cm , 5 cm and 6 cm is __
The pair of co-prime numbers is __
The value of k, if (x -1) is a factor of 4x3 + 3x2-4x+k, is __
There are 5 red and 3 black balls in a bag. Probability of drawing a black ball is __
The total surface area of a hemisphere of radius r is __
The roots of the equation 9x2 -bx+81 =0 will be equal , if the value of b is
If secθ + tanθ =x , then tanθ is __
Consider that w +x =-4, x+ y =25 and y + w = 15. Then the average of w, x, y is __
what is the original price of T-shirt, if the sale price after 15% discount is 272?
Tk. 500 is deposited in a savings account which pays 7% annual interest compounded semi -annually. To the nearest Taka, how much is in the account at the end of the year?
If logx14=-2, the x =?
if 5% gained by selling an article for BDT 350 than selling it for BDT 340 , the cost of the article is __
If x =y ya, y=zb and z =xc then the value of abc is
If x is 30% greater than y, what percent of y is x ?
The present age of Habib and Shikhan are in the ratio of 6 : 4 Five years ago their ages were in the ratio of 5 : 3 How old is Habib now ?
The lenghts of two sides of a right -angled triangle are 13 cm and 5 cm respectively. The length of the third side is __
If SinA + Sin2A=1, then the value of the expression cos2A +cos4A is _
A median of a traingle divides it into two __