Related Questions

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?
In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?
A basket contains four balls of four diffirent colors -white red, black and green which will be distributed among for persons Rajib, Litu, Simu, and Rida. Rida must not be given the black one. Simu not be given either the black one or the green one. If the above conditions are fulfilled, Which of the following must be true?
A box contains 200 marbles, 25% of which are of black colour. Babu took some marbles from the box found that 30% of them are black. Of the remaining marbles, 10% were black marbles. How many marbles did Babu take?
For the cultivation of which crop is black soil most suitable?
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of
Crop and Straighten photos কমান্ড ব্যবহারে ছবি crop করার পূর্বশর্ত কোনটি? 
It is almost always desirable to increase the yield of a crop if ... increases are not also necessary in encrgy, labor, and other inputs of crop production.
A box contains 24 balls , some are red and some are black. Each of the following could be the ratio between the red and black balls except
A box contains 10 balls, some are red and some are black. Each of the following could be the ratio of the red to black balls EXCEPT ---