If on a marked price the difference of selling prices with a discount of 30% and two successive discounts of 20% and 10% is 72, then the marked price (in rupees) is  

By selling 90 chocolates for Rs. 160, a chocolate trader loses 20%. How many chocolates should he sell for Rs. 96 to make a profit of 20%?

What will come in place of the question mark (?) in each of the following series?

15     ?    24    33     97    122     

Solve it 0.002 × 0.5=?

If the areas of circular ring having inner and outer radius 8 cm and 12 cm respectively is equal to the total surface area of cylinder of radius R₁ and height h, then h in terms of R₁ will be :

If angle bisector of a triangle bisects the opposite side, then what type of triangle is it?

The number will be, whose square is equal to the difference between the squares of 975 and 585, is:

Direction : What value should come in place question mark(?) in the following questions?

$$2\over7$$ of $$ 5\over6$$ of ?=200