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?
What does the underlined word mean in the following sentence?The old man's house, badly in need of paint, was leaning to one side and had holes in the roof, but one side and had holes in the roof, but
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
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?
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?
In a new production process, the number of units produced during the first week was 450. If the efficiency gradually increase so that 10 additional units can be produced each week, how many will be produced in the 10th week?
After taking 30 socks out of the washing machine, Shamim noticed that the ratio of blue socks to brown socks to black socks was 2:3:5. How many black socks were in the washing machine?
After taking 30 socks out of the dryer. Dina noticed that the ratio of blue socks to brown socks to black socks was 2 : 3 : 5. How many black socks were in the dryer?
After taking 30 socks out of the dryer, Dina noticed that the ratio of blue socks to brown socks to black socks was 2:3:5. How many black socks were in the dryer?