Robi has 10 pairs of matched socks. If he loses 7 individual socks, what is the greatest number of pairs of matched socks he can have left?
In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :
If the sum of three consecutive integers is odd, then the first and the last integers must be -
Of 30 applicants for a job, 14 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years' experience and did not have a degree. How many of the applicants had at least 4 years experience and a degree?
A person makes a profit of 10% on 25% of the quantity and a loss of 20% on the rest. What is the percentage gain or loss on the whole?
If the radius of a circle is increased by 6%, then the area of the circle is increased by ---
A person invested 2/3 th of his capital 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is
which of the following is the value of 0.0000643?
Morshed has d books, which is 3 times as many as Salam and 1/2 as many as Roni. How many books do the three of them have altogether, in terms of d?
Mr.Nazim was planning on depositing a certain amount of money each month into a college fund for his children. He then decided not to make any contributions during June and July. To make the same annual contribution that he had originally planned, by what percent should he increase his monthly deposits?
In the figure above, if PQRS is a parallelogram, then y-x=?