Three coins are tossed. Find the probability of exactly 2 heads-

A rectangular sheet of paper, 10 cm long and 8 cm wide has squares of side 2 cm cut from each of its corner. T...

A group of 20 friends formed and investment club, with each member contributing an equal amount to the general...

A machine is sold at a profit of 10%. Had it been sold for Tk. 40 less, there would have been a loss of 10%. W...

A train crossed a platform in 45 seconds travelling with a speed of 36 km/h. If the length of train is 200 met...

The perimeters of two squares are 40cm and 30cm. Find the perimeter of a third square whose area is equal to t...

if a+b+c = 0 , the value of is -